Looking for a sure way to make money in today's market? Buy a nice collectible Chevy Camaro or a Dodge Challenger. With a new Camaro and new Challenger coming out this year, the old ones are sure to go up in value.

In 30 years in the old-car hobby, I have seen this happen again and again. Excalibur, Modern Stutz, Shay Model A, New Beetle, Mini, Retro T-Bird, throwback Mustang -- it doesn't matter. When a modern version of an old car hits the market, it seems to automatically generate collector interest in the older models and their prices rise.

Take my word for it, the Camaro and the Challenger will be hot numbers this year and the numbers on their price stickers will be rising.