I suspect that the reason it's sat for as long as it has, is that it's not truely road worthy, and wasn't ment to be, alot of records like that were made on closed tracks, it just had to look from the outside like something socialy acceptable for the time, and that was it, top speed is most likely some where around 40mph, if even that.
I have no doubt that it truly gets 376 mpg. It's an utterly impracticle, purpose built car made purely to achieve a record. Heck, there's cars out there that get thousands of miles per gallon, but those are purpose built cars to break records, and would be useless on the street.
__________________ Team GasMisers5 - #1 for first three rounds of the original GS Fuel Economy Challenge
Miles displaced by e-bike since 1 Jan 2008: 62.6 (0 kWh used)
Hypomiler
I wonder if the ice was so they could run it with no radiator?
It looks like it has a radiator in the pictures, but it's packed with insulation and there are no vents cut in the side if the car to allow cross-flow. Hmmm.