friction is fun!!!

This past Thursday, I was riding home from school with JR and his sister Ashley. It was drizzling so the traffic was bumper to bumper right by Red Hill. So we get past the hill and we are already by the flat part when the person in front of us suddenly stops. JR is paying attention and he stops and one second later, boom! Ashley hits her head on my headrest and JR's knee hits all the buttons so all of the lights on the dashboard comes out. JR's car isn't that bad but the guy's in the back is totaled. He can't even get out of the car and his hood is folded together and bent like a roof. He said that he was going slow and that he tried to break but he skidded.
I realized that there was physics in this excuse. It had to do with friction! This couldn't have been what actually happened because the tires and the road have a certain maximum friction. He said he was going slow but this can't be possible if he slid. The car has to be going a certain speed so that when he stops, the force forward surpasses the friction of the tires and the road. Also he had to have been going fast if he hit us that hard and his car was in that bad shape. There was also another problem with his excuse. He said that he hit his breaks and skidded. But, the car was a more recent model, which means that it should have anti-lock breaks. Even more so, he would have to have been going faster because there is static friction between the tires and the road and not kinetic friction. Static friction has a higher maximum meaning he would have had to be going faster if he didn't have enough time to stop. Either that or he just wasn't paying attention and hit us. It was cool to be able to prove that someone was lying just because of a simple thing like friction.