Wind tunnel testing was used to create a completely smooth fiberglass exterior top and bottom, resulting in a drag coefficient of less than .30 for early TD models.
Upon arriving at the destination the fiberglass roof hinged up on one side and fold-out windows filled the gap, allowing a 6'2" individual to stand fully and walk around.
The kitchen included a microwave, an electric refrigerator, a sink above the hot water heat exchanger, and an alcohol fired stove.
Though the driving press[4] seemed to love it, the public only bought a bit over 300 of the original TD model in the first two years of business.
The following year the company tried to appeal to the traditional RV market by including all the touches liked by the RV buyer, a gasoline engine with more off-the-line power and no problems with overheating on mountain roads, automatic transmission, a real water heater, and a propane furnace.
Even regular roof air-conditioning was included, at the cost of the height advantage of the original Vixen TD, now needing a high-roof garage, or suffering outdoor parking.
Interview with Bill Collins and his widow Nina Collins, Summer 2023, by current President of the Vixen Owners' Association, awaiting publication in Fox Prints, the official newsletter of the Vixen Owners' Association