Book excerpt: Guaranteed to rev the engines of car fans everywhere. Supercars are the purest and most extreme expression of automotive performance there is - and no one knows the territory better than the TopGear team. With ever-increasing power outputs, radical new designs, and eye-popping price tags, this book is a celebration of the supercar in all its fabulous glory. Supercars also brings this incredibly fast-moving, hi-octane world bang up to date. The world's best writers and photographers explore the latest developments in thrilling style - from the new generation of pure-electric cars that have raised the bar for zero emissions performance, to the crazy machines hell-bent on breaking the 300mph barrier ... this is TopGear Supercars. Buckle up. Are you ready?