Our latest news letter, "racing & tax time", dated 3/20/12, has US tax info on capitalizing a racer that was sold at a loss. You have a second chance to deduct those losses the year of sale and there after. See the link:
http://racecarbook.com/freebies/newsletter-archive/
Bob Szabo, author of racing books about mechanical fuel injection & related topics, and an on-line FI calculator
www.racecarbook.com