Tom,
I'm sure we have seen worse and definitely this won't be the final word on reckless joyrides.
You might well be right that these guys may be just regular guys next door, but stupid is stupid....it doesn't differentiate race, creed, age or carreers.
Honestly, I'll be lying if myself and probably a lot of folks here would not secretly love to see some young guy total his GTR or his Ferrari, Porsche etc. in the middle of doing something stupid. I can appreciate a beautiful car as much as anyone else and equally respect a driver who show his class tastefully. But I'm completely apathetic towards stupid showboats.
You probably have a good idea of the guy(s) who made the video. I certainly don't wish them well. Couldn't care less if they kill themselves in the process. Just feel sorry for the poor innocent buggers they manage to injure/affect in this stupid deal of theirs.