He had a big smile on his face when his car hit a truck next to him.
Did he purposefully try to hit another car?
No, it was an accident.
Driving a car is a very big responsibility and should be done with the utmost caution. It's an extremely dangerous thing to do and you can easily kill someone while driving. You should always be alert and aware of your surroundings while driving so you don't hit someone.
Actually it doesn't matter, I think he could have survived it.
You need to think of the safety of others when you're driving. Tell your boyfriend to keep their eyes on the road and to be more cautious next time. Being safe while driving is about everyone for everyone else as well.