RE: some pics
If my memory is correct ,the 6 wheel Tyrell only competed one season with 3 finishes in the top six and one 3rd place at Monaco.
It did out corner and out brake the other cars but suffered in top speed.
The Fan car was a joint project between Alfa Romeo and Brabam.
It had a 30" dia fan mounted at the rear driven directly off the crankshaft (13000 RPM)
The fan would suck all the air out under the car (talk about ground effects).
The car was banned after two races because of the turbulance created behind the car.