The Hy-wire (Hydrogen drive-by-wire) is a concept car from General Motors originally introduced in January 2002. The car runs on hydrogen fuel cells and uses a drive-by-wire system, meaning that the car is controlled electronically. GM asked school children to name the car, and one of them suggested "Hy-wire".

In 2003, General Motors stated that it was confident that it could produce a commercially viable model by 2010. and the 2004 concept design places the two front seats on a rotating platform which allows the driver and passenger seats to be swapped or the driver to sit in front of the passenger for greater flexibility.

Powerplant

The Hy-wire is powered by a fuel cell capable of producing 94 kilowatts of power continuously and up to 129 kilowatts for short periods. The fuel cell itself is supplied with hydrogen from 3 tanks of compressed hydrogen located in the chassis. With its three-phase electric motor the 1,814 kg (4,000 lb) vehicle has a top speed of 160 km/h (100 mph).