1997 McLaren F1 Auctions for $4 MillionProving that vintage Italian iron isn't the only automotive investment to command multi-million dollar returns, a 1997 McLaren F1 supercar hit the equivalent of $4 million at a recent London RM auction. The British-built McLaren was once the fastest car in the world, and retailed for about a million in the late 1990s. This particular example had 270 miles on the clock and was reportedly the last new F1 built; regardless, the sale price is still close to $2 million over the car's appraised value. Just goes to show you all that's needed is the right buyer. [Motor Authority]