One correction Keith: the cars are no longer called Acuras since early 2010, the nomenclature is HPD (Honda Performance Development) ARX-03a. And yes, Karthikeyan was supposed to race in 2009 for Kolles in an Audi R10, but he dislocated his shoulder while jumping over the pitwall with about 25 minutes to go before the start and didn’t drive the car at all during the race. Andre Lotterer and Charles Zwolzman Jr drove the car for the full race as a 2-driver team and finished 7th.
As for Chandhok’s teammates, well… he’s got two great teachers to get him started in endurance racing: Peter Dumbreck and David Brabham.