The passenger side.
Understandably, the museum has a strict "do not touch" policy for visitors. Because of that, I could not capture a decent photo of the inside. (I would've needed
to place my hand on the window to block out the glare.) The inside was very simple though, and in fact, I'm pretty sure I only saw four things inside:
the ignition box, the steering wheel and two foot pedals. I'm not sure where the controls were for the transmission.