Back in 1970, Mattel agreed to sponsor U.S. serviceman Ed Shaver, a drag racer who was stationed in the U.K. at the time, and created a special U.K.-only Hot Wheels car for him. The car, which featured Ed Shaver and Mattel decals on it, was given away at tracks when he raced and also made available through special cereal mail-in deals. However, very few of these still exist today, so they've turned into a hot collector's item over time.