Depending on where your at its probably fine, start doing it in the parking lot or next to others vehicles then you'll probably be asked to leave as well as pay for the damages done.
I imagine you can do what ever you want but if you roll it break your machine or break yourself it’s on you. If you die because it pins you down and starts dumping gas on you and you catch fire it’s on you. You are responsible for your own safety. They are simply providing a place for you to do what you want and not get in any legal trouble.
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