Lofstrand Corp. of Rockville, Maryland built some of the earlier trucks for Roustabout. Lofstrand did small fabrication for the military as well, and was a natural fit to built the France Jet car. Too bad France Jet Motors didn't have any money!
While doing research on the France Jet car, we often wondered about why the engine was chosen, a Kohler two cylinder industrial engine, sometimes found in garden tractors. When the Trivan connection was uncovered, there was the solution.
See my "Brutsch Cars" set for all the pictures