We had never heard of "tether car racing," but after seeing this video we definitely want to know more. From what we can tell from this video, two guys have to give the toy a bit of a boost to get it going around the track. Then, as the name suggests, we assume the car remains attached to a line of some sort and is propelled around, maybe by the guy running around the center. The car in this video reaches an impressive speed of 205MPH, faster than any toy we've ever owned. In case you hadn't noticed, we like fast things.