Scooter use is rising in major cities. So are trips to the emergency room

> Once injured, many riders might discover from the vehicles' user agreements that they cannot file lawsuits because of clauses requiring that disputes be resolved by arbitration.

Even when the scooters are mechanically defective, such as having stuck accelerators or malfunctioning brakes, people still are stuck with arbitration?

What are the limits on people's abilities to sign self-harming contracts by clicking through some mammoth terms of use agreement?

Surely "I agree to let FooCo roll two dice, and if the results come up snake eyes, FooCo can kill me and auction off my organs" is invalid (um, right?) but how close to that can a contract get?