I thought this was pretty good. I had no idea that was the back wheel that was going away. I thought it was just some random object in the foreground! The animation wasn't bad. It's just that this didn't seem to go anywhere that much. I like the idea of underwater cars.
It was kind of used by Spongebob. Wait, they had boats. The movements were pretty slick. I mean the animation, not bowel movements. I probably use that word too much.