You may not immediately link the Honda FCX Clarity Fuel Cell to indy car racing, but Honda have found a way. Since 2007 IRL IndyCar series racers have been using 100% ethanol fuel, a fuel with a low environmental impact, while the Honda FCX Clarity runs on hydrogen and emits just water.
During the third race of the 2008 IRL IndyCar Series at the Twin Ring Motegi track in Tochigi, Japan the FCX Clarity will pace the 18 race cars at the start. The Honda FCX will do this using its 100kW Honda V Flow fuel cell stack which should be capable of about 160 km/h tops.
The FCX Clarity is, for now, a Sourthern California only car and debuted at the 2007 LA Auto Show. Maybe that this event kick off the FCX' global conquest.