Now available on DVD, the best of three of Jeremy Clarkson's most popular TV series in one massive collection. In Extreme Machines, Clarkson looks the Apache gunship, jet boats, a Swedish Stealth Battleship, snowmobiles, a P-51 Mustang and flies in an F16. The Motorworld series travelled the world examining attitudes towards motoring, while in Speed, Clarkson enters the andrenalin-fulled world of fast machines as he asks why we push the limits.