07/09/2008 01:41. While Nissan hasn't quite cut drivers out of the equation all together (yet), it is making some considerable progress in controlling just how they drive, including preventing folks from driving drunk and, now with its new ECO pedal, preventing people from driving inefficiently.

To do that, the pedal simply pushes back against the driver's foot when it detects wasteful acceleration, which Nissan says could improve fuel efficiency by as much as... // Portalino