"All this idea of making money from [collector] cars is fairly new. The real trick is, if you buy something you like and it goes up in value, great. If it goes down in value, you weren't going to sell it anyway." Jay Leno knows a thing or two about buying and collecting classic cars, since he owns one of the world's most impressive collections, including dozens of unique and valuable vehicles. In an interview with Bloomberg Businessweek, Jay Leno explained some of the helpful classic car buying tips he has learned over the years.