Proto P2 cars are a sort of covered go-karts with a very low weight and powered by motorcycle-derived engines which makes them very agile and suitable for slalom races and for tiny and little circuits. Generally they are homemade by enthusiasts but there are specialized companies who build these fun track-toys. In this video you can see a pretty crazy and fast Fiat Cinquecento powered by a Kawasaki ZX10-R 1000cc engine during the 2018 Challenge del Lupo at Castelletto Circuit! Formula Challenge is an Ital
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