Astra RNR2

The Astra RNR2 is a Group 6 sports prototype race car, designed, developed and built by British amateur racing driver, Roger Nathan, in 1969. Only two models were produced. It debuted at an R.A.C. race at Snetterton, in 1970; being driven by Roger Nathan. It achieved moderate success in sports car racing, winning 4 races (plus 1 additional class win), scoring 6 podium finishes, and clinching 2 pole positions. It was powered by a naturally-aspirated 1.8 L Ford-FVC four-cylinder engine, producing 245 hp. This gave it a power-to-weight ratio of exactly 0.45 hp/kg, or 1 hp/lb.