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Every single Onewheel is being recalled after four deaths
(www.theverge.com)
This is a most excellent place for technology news and articles.
Me: "My car malfunctioned while going some undisclosed and possibly reasonable speed. It's bad that it malfunctioned, and the product would be safer for everyone if it didn't do that."
I haven't seen anything to suggest that the victims were all behaving excessively recklessly, as in your "driving 150mph" example. "Certain limits" is pretty vague, and based on context, sound like they pertain more to hardware constraints than to dangerous behavior.