Delta Force
Banned
Maybe you want a car that can double as a generator? Or a car that can run on kerosene? Or, you know, just because, which is about the only reason I can find for the Ford Nucleon.
I don't think Ford was serious about the Nucleon. I think a nuclear reactor could fit in something the size of a car (or at least a fissile core capable of achieving critical mass could), but once you take into account the reactor vessel, coolant loops (even if you combine secondary and primary loops) and radiation shielding you would have a low performance car. Even an atomic battery wouldn't be practical for a car as ones used on space probes (which don't have to worry about shielding and safety devices for a manned or terrestrial object) give a terrible 4 horsepower to metric ton power to weight ratio.
Maybe you should go back and ask the bosses at GM why they threw so much at the gas turbines then, because if those can get that kind of funding, I fail to see why one company or another wouldn't be willing to throw some at hybrids.
A turbine-electric hybrid actually isn't that impractical. The General Motors EV1 actually was a turbine-electric hybrid. The major issue I see for a 1960s turbine car is that the first large turbine powered ship was the Canadian Iroquois class destroyer, and even the Iroquois used a geared turbine powertrain. Modern hybrids only started due to the environmental movement. The first modern hybrid was developed in 1972 as part of a United States government environmental initiative. American Motor Company made the AMC Amitron electric car in the late 1960s, and its performance figures look good (50 miles per hour with a 150 mile range), but apparently it was heavily dependent on government environmental program funding and suffered from expensive batteries. Interestingly, the Amitron helped develop an early form of the regenerative braking systems used in modern hybrid cars.