Tim investigates why it can cost up to £200 just to change a headlight bulb on a Renault Mégane. Vicki spends a day with Lewis Hamilton at the Brooklands Motoring Festival. Jonny sees what kinda car you can get if you swore off drinking alcohol for 3... (more) years and saved the money instead. Jason goes powersliding in the new Porsche 911 GT2. Tom drives the new Mercedes-Benz SL63 AMG, crash tests a second-hand convertible in a rollover crash. Shootout: Tiff puts the latest Mazda RX-8 against the Nissan 350Z.