Mercedes-Benz SL

The SL is made almost entirely of aluminum to save weight. Power comes from a 429-hp, 4.6-liter V8 that employs a start-stop system to save fuel. The car looks a lot like the old two-seat roadster, but its retractable hard top has adjustable opacity to let sunlight in even when the top is raised. It is full of new high-tech features and safety equipment: Pre-Safe collision mitigation, adaptive brakes and cruise control, active head restraints, head-curtain air bags, and more.