In the past, I have read post pertaining to the cost of operating a race car. I found this information at Racer.com It pertains to the cost of running an Indy car. through their lease program.
QUOTE: A lease for the 17-race season has been reduced by $27,000, to $935,000 ($15,000 lease and removal of $12,000 shipping fee) – about half of the 2005 lease program cost. For the Indianapolis 500, Griffiths said, "We're still offering a variety of options, but the basic price for an Indy-only team is $150,000. Last year it was $225,000." The package includes 800 miles of practice and qualifications, Miller Lite Carb Day and the race. A fresh engine for Miller Lite Carb Day and the race will be available for $60,000.