Rod is the guy that built tha Pac-Man "show rod" you may have seen pics of around the interwebs. From what I've read, it started as an egg-shaped car for Robin Williams' Mork character but he quit the show before it was done. It was then reshaped into the Pac-Man car. According to Rod, the car still exists but he doesn't know where it is. There's some great shots of the car I've never seen before attached to some of the posts below.
Sadly it seems it was not drivable, just for display.