[lee martell]

That’s amazing. I guess those sort of cars must be pushed first or launched. Oh, how to weaponize this fine little American toy? Looks like the circular momentum is necessary in order to overcome gravity and inertia, then build up velocity. Maybe with a wider circle to travel, even greater speed could be achieved, provided the rubber tires don’t start to melt first.

[CincyRichieRich]

Call it the fusion car!

[dr_lew]

It hits just about 2 circuits per second at 200 mph ~= 294 fps, so that's 147 feet per circuit, giving a radius ~= 24 ft . That would give a centripetal acceleration of v²/r ~= 294²/24 f/s² ~= 3600 f/s² ~= 112 g . This would mean the car must weigh less than a pound, for sure, since it would take 112 pounds of force to radially constrain one pound at this speed.

So, this strains credulity, I would say. As noted they don't show the guy in the center at this speed either.