Video: Carl Edwards — I Got Mistaken for Michael Phelps … in Thailand!

All famous jacked white dudes look the same … at least to some people in Thailand where NASCAR superstar Carl Edwards says he was once mistaken for the greatest swimmer of all time.

Edwards admits he was at a pool at the time (and fun fact: they're both super ripped) … but the way he tells the story is pretty hilarious.

We also talked racing with the speedster — who admitted he once zoned out behind the wheel because he couldn't get that FarmersOnly.com theme song out of his head.

Can't really blame the guy … it's super catchy. TMZSports.com