Thrust into the spotlight during Toyota's acceleration-pedal recall in late 2009, his initial public comments seemed awkward.

WSJ: Toyota Chief Akio Toyoda Grabs Wheel to Turn Around Humbled Auto Giant

Electric boost is also available when a kick-down switch in the throttle pedal is activated by the driver during acceleration.

ENGADGET: Porsche Panamera S E-Hybrid plug-in model brings 416 guilt-free horsepower

The one sure cause of unintended acceleration, of course, is drivers stomping on the gas pedal instead of the brake, a not unknown phenomenon.

FORBES: NASA Report Makes Life Tougher For Lawyers Suing Toyota