Lotus knows all about making  light, sharp and quick sportscars. While Sir Colin Chapman's ''light is fast'' ethos mightn't have served some  F1 drivers too well in terms of safety, Lotus cars have always been  drivers' cars. The latest toy from  the company's Hethel, UK, factory is this Elise S Cup R,  a track-day weapon that uses the mid-mounted, supercharged 1.8L engine from the S road car. It has race mods, including adjustable  suspension and  aerodynamically efficient bodykit, but weighs only  924kg.