I always thought these things were a bit silly looking, like a Bradley GT made with an Airstream trailer. Yet an interesting foundation, had he worked to evolve the design further.
Turns out that, like a number of his wilder architectural ideas, form took precedence over function and a whole lot of evolution would have been needed to make it work out.
A Harrowing Test Drive of Buckminster Fuller’s 1933 Dymaxion Car: Art That’s Scary to Ride