Joey Logano: I Have A Driving Secret ... I GET CAR SICK

Add this to the "Seriously, Like For Real Bro?" file ...

2015 Daytona 500 champ Joey Logano just made a bombshell admission ... one that really makes you feel for a guy that makes his ENTIRE LIVING behind the wheel of a car ...

He actually gets car sick.

We got Joey out in Fontana getting ready to burn some rubber competing in NASCAR's Auto Club 400 Sunday when we asked about his driving habits away from the track.

That's when he dropped it on us ... saying he never lets his wife -- or anyone -- drive him around because the world class speedster gets an upset tummy if anyone else has the wheel.