Just to throw another car in the pot, does anyone know where the 'Scarab" sportscar is. I owned it in 1968 and converted it to road legal, which was a bit of a hoot! Powered by a Studebaker Hawk V8, 3 speed box, Ford V8 rear end, VW Kombi fron end complete with drum brakes.
Looked like a large U2!
It is reputed to have left the back straight at Pukekohe when the brakes faded and ended up on the main road, where it eventually re-entered the circuit through the main gates.