I voted for peter pan for this list but my real answers would be.
The speedway in MK. Its always crowded and its worse then a gokart track, which even my middle of no where area has.
Test track. I know its fast but its the same kind of fast as driving down the high way. Its just not fun to me.
Speedway isn't on that list because it is really meant for kids. I also personally dislike it like crazy, but my kids love it. I also have fond memories of it when I was six...it seemed a lot bigger and faster then.