I can just see her head over the front seat.
He reached back over the seat of the car and helped me right myself.
She then climbed over the seat and out the door.
I can climb over the front seat while you are moving.
He turned, leaning over the seat to make his point.
My guess is she was half over the front seat when the steering went out.
The little man shot forward, sticking his head over the seat.
He dropped the empty over the seat to the floor.
"What's this green stuff all over the seat and floor?"
She turned off the "assistance" light over the middle seat.