10. 2008 Diamond-Encrusted Custom Otto
In 2008, Mattel wanted to prove just how big the Hot Wheels brand had become. So, they commissioned celebrity jeweler Jason Arasheben of Jason of Beverly Hills to create a one-of-a-kind Hot Wheels car to help them celebrate their 40th anniversary. It featured 2,702 multicolored diamonds, took more than 600 hours to produce, and was auctioned off for $140,000. Quite the status symbol, eh?