The McLaren F1 automobile is a $10 million car, and there's only 100 in existence. It's the world's greatest supercar according to Jalopnik.com. It was the first proper production car to use a carbon fiber monocoque chassis, designed by Formula One legend Gordon Murray. It turns out, when they built these in 1998, that the state of the art computing was a DOS based Compaq laptop. Apparently, to this day, if a McLaren F1 needs service, it requires that same DOS based Compaq laptop. The problem is, they're running out of them. They're a little worried at the factory, and they're currently working on a new interface that works on modern laptops.
Read more at Jalopnik.com.