Being unique, and being featured in a film, can both often increase a car's value. But, as childhood friends Jay Leno and Donald Osborne, an automation valuation expert, discover while appraising three cars on Wednesday's episode of CNBC's "Jay Leno's Garage," that's not always true.
In fact, appearing in a bad movie can cost you. A lot.
Here are the three vintage, mid-century cars Leno and Osborne consider as they try to guess which has appreciated best.