I've recently realized that I'm running out of display space for my Hot Wheels collection. I'm now up to about 300 items, even though I've tried to slow things down a bit. But every other week, Mattel ...

Some vintage Hot Wheels cars can be worth thousands today. Check out 15 of the most valuable models and see if your old collection could get you to cash in big.

It all started as a joke. Chris Sondles-principal owner of Woody's Hot Rodz in Bright, Indiana-was shopping with his wife one day when he found a peculiar yellow Hot Wheels car. The Chevy Vega Hot ...