Lew Arrington's funny car Mustang had a great paintjob, the hood was decorated with the molecular representation of nitromethane

Image from http://www.70sfunnycars.com/FunnyCars1.html

above found on http://public.fotki.com/VincePutt/drag_racing/funny-cars/ford-funny-cars/71-73_mustang_funny_cars/lew_arrington_brutu-21.html

Bonus interesting item, he used Mopar Hemi power, but put fake valve covers on it to fool the mildly observant