August 4, 2008: 9:52 AM EDT
TOKYO (AP) -- Nissan Motor Co. will soon sell cars that push back when drivers try to put the pedal to the metal.
The Japanese carmaker Monday announced its new "ECO Pedal" system, which makes the gas pedal press upward when it senses motorists are speeding up too quickly.
Nissan (NSANY) said in a press release the system, which will be available next year, can help drivers improve fuel efficiency 5% to 10%.
A poor-man's version could easily be made with a microswitch on the throttle linkage and LED on the dashboard.