1936 MASERATI 6C CycleKart. 
I think time spent acting along or in the direction of a tangent is not just good design practice, but essential. It is a way to learn without the constraints of time, money and programs. It informs our process and feeds our souls. 
CycleKarts are small, lightweight, nimble machines made by their drivers for the pursuit of motoring sport. They're not serious speed-machines, but we do top 40 MPH, or status-generating show cars. They're purely for the gritty fun and satisfaction of tearing around in a machine you've built yourself. Loosely based on Grand Prix cars of the early 1900's, they are as much about art as they are reproduction. 
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