Technical Skates for moving cars

Hi, I found these on offer up, they work great, aslong as the ground is smooth. looking on getting a couple more, here's the link https://technotoytuning.com/garage/parts/techno-toy-tuning-hub-stands

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^^^Cool, but not very useful for moving the car around.
If the stand gets hung up, and the hub rotates, the car is coming down.

 

My thoughts exactly, I prefer to spend a few bucks and not get hurt or damage the car.

 

I`d flip them around the other way if possible. I`m left handed so I see everything backwards.

 

Garage is above a steep driveway, eh, what could go wrong?