Don’t know if you have anything up in the attic (photo stash)..Propane “X” was an
experimental car..I think sponsored by Suburban Propane (Brewster and/or Mount Kisco).
My mind says 1967 Barracuda, with a propane tank mounted in the back seat area.
May have run in 68’/69′..May have been painted White, and ran in the 11.90 range???
What class??? Doesn’t that sound dumb,,,,had to be Gas…
Brian Works for Them…They are All over the country…Brian…fill us in