For a while after we looked up the history of Stirling-engined AMCs last year, we followed several leads looking for the actual cars used for those tests, but to no avail. Fortunately, John Corey, who worked on the team that studied automotive Stirling engines for NASA, recently came across that post and in the ensuing discussion forwarded us this photo of the Stirling-engined Dodge D-150 pickup, currently sitting in cold storage at the NASA facility in Sandusky, Ohio, with its Stirling still under the hood.

In the same facility are a couple of other Stirling engines, a 40kW USS VX4 (similar to, if not the same, engine that powered the Opel) and behind it a 60kW MOD1 (similar to, if not the same, as the engine that powered the 60 MPG Chevrolet Celebrity). John notes that these engines were "about the same size as a big-block V-8 – sometimes we had to 'adjust' the frame rails a bit."

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