View A Team Profile
More Search Options
Bookmark and ShareTango (Commuter Cars)
Previous Next
Eliminated
Status Details
Failure to meet minimum fuel economy requirement; exceeded maximum threshold of 200g/mile CO2; unable to complete required laps for Range
Tango T600 (49)
Team Leader: Rick Woodbury
Team Website: www.commutercars.com
Powertrain: Battery Electric
Fuel Type: N/A
Design: New
Class: Alternative (Tandem)
are tracking this vehicle. Sign in or register to track this vehicle!
The data are approximations for informational purposes only and may not reflect actual metrics used to score entrants.

Team Bio

Inspiration for the Tango

In about 1982, I was stuck in traffic in Los Angeles and noticed only one person in each car around me. I contemplated how many millions are stuck in my situation every day and just seem numb to it--a frustration without a solution. I thought about what would be the solution. It was obvious that length of a vehicle was much less important than width for increasing freeway lane capacity in cars per hour. Making a car half as wide, or able to fit in a half lane with adequate clearance would allow a doubling of lane capacity. Shortening a car would make a much smaller difference because most of the real estate used by a car is the space in front for braking reaction time and braking distance. Since roughly 90% of all cars have one person in them, why would people choose a wide car for most of their trips, given the choice?

It occurred to me of course that a narrow car would tip over in cornering. Being a casual Porsche race driver at the time, I was quite aware of the relation of lateral G forces and center of mass. I've been an advocate of hydrogen fuel for cars since 1975 when I first read about them in a Brazilian magazine. I knew that although an internal-combustion-engined car would be hard to ballast enough for stability, a hydrogen car using iron-titanium hydride or a similar carrier for the hydrogen would make great ballast for stabilizing a narrow car.

I stewed on this for nearly 20 years wondering when a car company would figure this out. I remember speaking with Peter Schutz and Helmut Bott, Porsche's president and chief engineer at the time about hydrogen. They said that it was a 20 year project, and that they could only afford to work on 5-year projects at Porsche.

Almost exactly 20 year later I learned of the progress being made at Daimler-Benz, and their planned purchase of Ballard stock, a hydrogen fuel cell company. Many things came together at that time that catalyzed my son and I building a prototype narrow car that ran on batteries just to prove our theory. We originally thought that batteries wouldn't have enough range and that our work was to prepare for hydrogen power. We learned quickly though that batteries were much more than sufficient for the average commute. In fact, because the Tango was not trying to be everything to everybody, only appealing to 90% of all trips, that inexpensive lead-acid batteries would be sufficient. As we built and developed our proof-of-concept vehicle, we found it to be more and more valid. Little by little we raised capital to advance the design to the point where it is today.

For more information on Tango (Commuter Cars), check out the team's coverage on ConsumerReports.org

Rick Woodbury

Hometown: Hermosa Beach, California
Role on team: Team Leader
How did you become involved in the team?
I founded Commuter Cars with my son Bryan in 1998 in order to solve traffic congestion world wide. We have a long way to go, but have made a significant start.

YouTube Video of Tango Flying Through Chicane During Automotive X-Prize Finals

August 23, 2010

Just received this video (click on this link) taken by Michael Woon, of the Tango going through the chicane at Michigan International Speedway during finals. During this run, the Tango achieved both 100 miles and 100 MPG equivalent with approximately 10% state of charge at the end. This, despite rather aggressive driving, but not as tough as the stop and go in the urban and city cycles. And, of course, this time without running the air conditioning. ... more »

Tango Climbs Mt. Shasta

August 8, 2010

Thomas Greither, takes a friend up to the end of the road on Mt. Shasta in his Tango. Both are over 6-ft. tall. This photo is at 9,000-ft of elevation. It the first electric car that we know of that's climbed Mt. Shasta. It did this with ease and the round trip only used 35% of the charge. His Tango is now equipped with 1,000 Headway energy cells, 10 in parallel and 100 in series. This gives him 32 kWhrs, which is about 120 miles of 60 mph relatively level freeway driving.A year ago, when he only had lead-acid batteries, I followed him around M... more »

Tango: A Progressive Automotive X-Prize Finalist

August 3, 2010

The Tango was never designed to be the most fuel-efficient car in the world. To do that, safety and rollover threshold would be compromised. The fact that the 3,300-pound Tango made it to finals in the Automotive X-Prize competition is quite remarkable.Following is the official data from the efficiency event. Note that although the Tango was less than 1% short of the required MPGe to go to Argonne for the Validation Stage, it needed 104 MPGe, because of the emissions requirement. They use a national grid average to calculate the emissions from ... more »

Tango passes X-Prize Knockout. Consumer Reports, regarding emergency-avoidance maneuver: "And the sleek, fast, orange Tango passed on the first try."

June 30, 2010

I'm just returning now from a successful completion of the X-Prize Knockout event. Staying in Bismarck ND tonight, I should be back in Spokane Tomorrow. I'll be taking the Tango back to Finals at Michigan International Speedway (MIS) on July 18 through 30th.During the Shakedown event last month, Consumer Reports captured the Tango in the 0 - 60 acceleration and braking events, but didn't get the the emergency-avoidance (moose test or double lane change, as it's often called), before I had finished it. During Knockout, to the best of my knowledg... more »

Gratitude!

June 26, 2010

We are still contenders in the Automotive X-Prize competition due to no small contribution from other teams and volunteers. We've now completed the first week of the Knockout stage which consisted of economy runs which require 67 MPGe (Miles Per Gallon Equivalent) and a range, in our class, of 67 miles at 60 mph. We completed these easily, of course, however, the urban and city driving cycles brought the Tango down to 86.8 MPGe due to lack of regen which we sacrificed in order to have the extreme torque of two series-wound traction motors. The ... more »

Pepsi Refresh Project to receive $250k Grant

June 7, 2010

We are trying to raise capital to further the Tango project to drive toward lower cost Tangos. The Pepsi Refresh Project is a way to win a $250k grant which can be used for demos and tooling to reduce cost. We need your votes. All you have to do is to click on this link and vote for our idea. It is only for the month of June.Please Click Here. ... more »