We've seen GM's very ahead-of-the-curve Stir-Lec concept before, but BangShift has found another old magazine ad scan to share with the rest of the
[Source: Bang Shift via Treehugger]
This is the Stir-Lec I.
And if you saw if on a highway, you'd probably think it was a standard Opel Kadett.
You'd be half-right. It's got an Opel body. But it's powered by electricity. The power plant consists of 14 conventional lead-acid batteries that you could by down at the corner. The energy from the batteries is transferred to an electric motor which in turn drives the rear wheels. And the car can tool along at speeds of up to 55 miles an hour.
While the car's running, the batteries are constantly recharged by a small Stirling engine in the rear. It's so quiet that you can hardly tell whether it's on or off. And since the Stirling is an external combustion engine (fuel is burned in a separate chamber from the engine), the exhaust has virtually no odor and pollution levels can be made very low.
Stir-Lec I is still only an experimental model. A project the Engineers at GM's Research Laboratories are working on today, to meet the demands of the future.