lowride, v. — Green’s Dictionary of Slang

lowride v.

(US) to cruise the streets in a low-slung, customized car.

1980		E. Folb Runnin’ Down Some Lines viii: A day’s adventure of ‘low-riding’ around the local high school.
1997		E. Little Another Day in Paradise 206: Lowride tonight, I’ll teach you how to surf tomorrow.

get low (v.)

(US) to ride in a car so that only one’s head is visible.

1980

E. Folb Runnin’ Down Some Lines 239: get low Drive or ride in a car so that only the tops of the occupants’ heads are visible from the outside.