It's getting harder to find a car to lease these days. Chrysler's financial arm recently pulled out of the car leasing business, and Ford Motor Credit, GMAC and many large banks also have announced pullbacks.

The reason? Lease financing companies, particularly the Big Three automakers' captive finance arms, are being pummeled by the falling residual values of trucks and SUVs coming off lease, which have fallen as much as 20 percent in just the last few months.