Explosion in Nashville this morning.

[Brian37]

At best, he might have gotten cold feet at the last second and tried to flee. But if that were the case there would have been witnesses to his fleeing and or being caught on camera. Investigators said he committed suicide, and part of them saying that was because they saw nobody exit the vehicle. Odds are, even upon initially looking into the vehicle, one could easily hide in the back knowing without a bomb squad being there, cops were not about to try open any windows or doors in case those were rigged as well. 

At this current point the mundane reality is saying that he blew himself up without leaving the vehicle.

You keep using that word but I don't think you know the meaning if it.

A person acting alone in the fashion he did, isn't as sexy as a conspiracy to many. 

There does not have to be a conspiracy every time something like this happens. 

The problem with all conspiracies in general, like JFK, or 9/11 or little green men, is that the more people involved in investigating such claims who come to the conclusion that there is no evidence for anything other than what they find, or not finding evidence, the harder it would be become to perpetuate such a lie if it were a lie. Oswald acted alone, Bush Jr was not in on 9/11, and Area 51 is simply a myth started by ignorant people who could not understand our government was protecting military secrets not little green men. 

The mundane reality is that this guy killed himself. Certainly in grand fashion, but that is all there is to it. They caught McVeigh's helpers. In the case of the Boston bobmers, the caught them quickly too. If Warner had had any help we would have had a good indicator by now. 

Interviewing his family and friends at this point, now that he is dead, can only give us a tangential clue. But you don't get away with something like this with help from others and not have that help exposed.