I hear he can swap out a transmission in an instant
I don’t think I trust Goku with my car. I know I don’t trust child Goku. Kid thought cars were demons, at first, and managed to blow a hole into one his first time trying the Kamehameha.
Adult Goku just doesn’t seem mechanically adept. Like, not even going down the “Goku is stupid” train(He can be decently intelligent, when the need arises), but I just can’t picture him going “I wanna know how a car works”.
Goku and Piccolo tried to get a driver’s license in a filler episode of Z. The only thing they accomplished was a ton of destroyed vehicles.
First thing I thought of when I saw this sign lol. The cars looked like they had been driven by them as well
Maybe Goku is just the celebrity sponsor/spokesperson but Bulma is the one in the garage.