Following in the footsteps of the purist Valkyrie, Aston Martin's next limited release is the Speedster, recalling the open-cockpit prototype race cars of the '50s and '60s. Taking Aston Martin's Q division just 12 months from sketch to road, the V12 Speedster is now undertaking road testing as a fully-functioning car — and is completely unchanged from the concept. The Speedster rides on a totally new bonded-aluminum chassis and wears carbon fiber bodywork, meaning the car will get the most out of its 700 horsepower, twin-turbo V12. Adaptive dampers and massive carbon brakes are visible, meaning the road-holding should match the acceleration. Only 88 units of the Speedster will be made, with Aston Martin not stating whether there are any still available.