Yeah, agreed - it's just not funny. I originally was writing about a triangular shaped wheel on a car prototype I saw about 15 years ago on an Aussie TV show c

Yeah, agreed - it's just not funny. I originally was writing about a triangular shaped wheel on a car prototype I saw about 15 years ago on an Aussie TV show called Beyond 2000. The premise of that show was essentially they showed off a lot of bleeding edge technologies (for it's time), prototypes and just plain new ideas - Fascinating stuff, especially for a 12 yr old kid. Essentially the "wheel" was triangular prism with a track that ran around the perimeter to provide motion. It was also able to walk up stairs/curbs by rotating the "wheel". I remember it was an odd sight to see a car trying to walk up a group of stairs. We still use good, old fashioned, round wheels though. So I opted for the pencil joke, as the other was too obscure a reference.