See, you made the same mistake the successful deranged person would have fooled the police into making: You said the car would be part of the evidence. But go back and read what I wrote: the psycho puts the bomb into someone else's already open car. The car is a distraction.

> there would be quite an easier way to do so

First, psychos are not rational evaluators. Second, setting a bomb in a public place is a lot easier than sniping cops. There's no need to run, there's no head-to-head confrontation. The weapon can be untraceably manufactured in one's home - you can't just whip together a decent sniper rifle.

> Some one booby trapping electronics to blow up cops what is this a 90's action film?

That was a witty phrase in the Aughts to shut down outsiders in security circles, but since then, there have been growing cases of snipers attacking police. It's reality, unfortunately and this policy increases the attack surface of officer security. [ 1 2 3 4 ].

[ 1 ] http://abcnews.go.com/US/suspect-pennsylvania-cop-shooting-s...

[ 2 ] http://www.cnn.com/2015/06/13/us/dallas-police-headquarters-...

[ 3 ] http://www.cbsnews.com/news/sniper-kills-two-officers-later-...

[ 4 ] http://gothamist.com/2013/07/05/police_search_for_sniper_who...