The cars in the film certainly do not look like the Howmet. As the film credits include Fibre Fab Inc I would think that the vehicles used were correctly identified in an earlier post in this thread
Originally posted by dbw
it's been a long time but i do believe the "T-70" was a creation of the boys at "fiberfab" in oakland calif.....most likely VW powered....fiberfab was one of the original kit car companies in the US....the "aztec","jamican"and odd and assorted dune buggy stuff came out of their shops...the lola was probably a "splash" taken off a local car.....later they did the same to a lambo miura,but it never made it to market...seems the CEO murdered his wife and the company went dormant for quite a while....
The Howmet offered for sale in Hemmings would be the original prototype, which has been in California for some years. Although the advert mentions the Continental TS325 engine, the car is a non-runner because the engine is only a display one - with no internals as I understand it. The original TS325 engines were always the property of Continental and were returned to them before the two cars were sold by Howmet to Ray Heppenstall (for one dollar) in 1971.
The second of the original cars, now owned by Chuck Haines, is the one rolled by Dick Thompson at Le Mans, then rebuilt with an open body and used by Heppenstall to set some speed records in 1970. An Allison engine was used when Bob McKee rebuilt this car in the late 1990s, now with coupe body again, for Haines. This is the car that has appeared at Elkhart Lake, Goodwood and elsewhere.
In 1968 McKee also produced a spare chassis, which never got used at the time. I understand McKee has also built this up into a coupe for Chuck Haines, this "new" car being completed in 2000.
In 1968, in addition to racing in World Championship rounds at Daytona, Sebring, Brands Hatch, Watkins Glen and Le Mans (both cars running at the Glen & Le Mans), the car also ran in the Oulton Park Spring Cup, and in the USA in SCCA races at Cumberland (2nd), Grattan, Brainerd (3rd), Huntsville (1st - and first race win by a turbine-powered car), and Marlboro where Thompson & Heppenstall won the Marlboro 300.