Mike Mitchell, World's Fastest Hippie had IMPEACH NIXON on his dragster Barracuda rear spoiler

 Impeach Nixon painted on the spoiler with the X in Nixon as a swastika,

Wally Parks saw it and made Mike put duct tape over it.

2 years later, after Nixon  resigned, Wally told Mitchell he was sorry and that Mike was correct.

http://www.70sfunnycars.com/FunnyCars15.html
http://www.jalopyjournal.com/forum/threads/worlds-fastest-hippie-mike-mitchell.31749/