Cosworth, the well-known auto performance group, is making a public return to the IndyCar car racing series (OK, it's always been around in the shadows). The company just unveiled its Cosworth Live on Air system, which puts portable WiMAX in each car, potentially offering spectators trackside and at home live feeds of interesting data. Most -- if not all -- of this info is already available to race scrutineers via the Cosworth equipment built into all the cars, but the Cosworth Live on Air system should see that data presented to fans in new and never-before-seen ways.