The Car Connection has been down with the iPhone from Day One--the joy of waiting in July heat in Atlanta for one exceeded only by the arrival of the TCC iPhone app. (Let's not talk about the 3G/MobileMe debacle.)
Now Audi's horning in on our action with the Audi A4 Challenge app, available free from the iTunes store. Essentially a driving game with the four-ring logo plastered about, the Audi app uses the iPhone's sensors to allow users to "steer" an A4 through some driving exercises. There are different courses and a lap timer, of course, so you can race other drivers and look like a total geek at the same time, with the phone clutched like a Gameboy and all.
The app's also available via clickthru at Audi's Truth in Engineering site. The A4, meanwhile, goes on sale next month - you can read our full review of the 2009 Audi A4 lineup while you wait.