"I was just bored, this wasn't anything special. We all do this - we sing, while we're driving."
No we don't. Just the mentally retarded ones. No doubt when the cops catch up with him he will get nothing more than a 'dont do it again' warning. I'm not going to go off on a rant/tirade about how stupid etc, or list what could go wrong, and so forth. Its tempting to rail against the (sometimes) far lower standards of foreign trucks and drivers, but really, whats the point? Authorities anywhere really dont seem to care. Unless you happen to be a british driver, then you are fair game for all and sundry.
If there's truly any justice in this world, then this guys family will be wiped out by someone else doing the same thing, because 'everyone else does it too'.
Harsh thoughts? Yes. Uncalled for? Yes. Likely to happen? Not to this guys family.