Hi,
I read in different places... websites etc...
seems some talk of free-energy device unknown source, other that talks of atmopheric energy harversting device... and also as I remember , that the car was remotely powered by a transmitter made by Tesla just for that... transmitting power using the air as "channel".
Now... I stay with my idea... Tesla found a way to remote power the car ...then run it with the electric motor installed... and it worked around 1930 or something.
I belive the story is true, just seems much 90mph as speed... really much... but who knows... spending hundreds Kw of radiating energy or finding a low-loss way to transfer it to the car can also explain that... seems the electric motor mounted in place of ICE was around 80HP... so something about 59Kw not small stuff... and a car can run at 90mph with such engine inside up and running!
Expecially if the road goes down...
Now someone said that the power that supplied the transmitter used by Tesla was derived from e.g. ionosphere/earth circuit... so was the free energy we are talking about... but not the car by itself.
Kind regards,
Max