Move over, Jameis Winston ... top NFL draft prospect Mekhi Becton is officially the king of car-pushing workouts -- the Louisville O-lineman just shoved a pickup with the brakes on!!!

The 6'7", 368-pound beast -- who's projected to be a top-15 pick next month -- took his quarantine workouts to the streets this week ... and it was impressive as hell.

Check out the video ... Becton moves the Ford Raptor -- which weighs roughly 5,500 POUNDS -- without much effort ... all while the car's brakes were activated!!