Emergency button?

Hello,

I have one question:

What was the emergency button if Nicolas (Michael Douglas) acted totally dangerous?

I remember the car chase. What was the plan if he had decided to injure / kill innocent persons on purpose?

He did not know that this was a game. What if he decided that if he goes down he takes anybody with him he can get?

Ramming pedestrians, forcing other cars off the streets, you name it.

So, how was this company prepared for this?