Henk4, they knowingly joined him in th car but may not have known about it being unregistered or going to go that fast, even when told to slow down.
Case in point, someone I know was doing a claimed 180km/h in a 50km/h zone and tried to go round a corner (90 degree) at about 80km/h and crashed into a house. Luckily no one was hurt. His friend was telling him to slow down and he wouldn't.
What I am trying to say is that passengers may think the driver will do the right thing and they don't and wont stop when asked to.
I want to die in my sleep like my Grandma, not screaming like the other 3 people in her car.
There are 10 types of people in this world. People who understand binary and people who don't.