Clan Crusader: the Lotus engineers' fibreglass underdog (1971-1973) The Clan Crusader was a tiny rear-engined glass-fibre coupe designed by ex-Lotus engineers, built around Hillman Imp mechanicals in County Durham, and so strongly made it passed a 30 mph crash test almost no kit-car maker even attempted. It was selling well when the 1973 tax change killed it. A guide to the history, the cars, what to look for, and what they are worth.