Lame. It was a smoking car with a bomb in it. (How convenient that it smoked) And one that burned. A dude got burn wounds, but people would do that for a million Euros and a new identity.
Point is that it is easily faked, i know this is a Yes/No debate, at this point, requires research.
Of course i thought already about what news reports said about it. Your counter argument is the lamest one conceivable. Just admit that you believe what news reports feed you, then.
I am not at all sure what happened, wish i could believe news reports, but i cant. Many complot theories about terrorist plots exists. But i need to see the particular theories put to the test.

Also, random place, a random time should be made, to see if someone can come up of a conspiracy theory of a random time on which nothing happened. If much(convincing) 'evidence' of a conspiracy exists for that, it will diminish other conspiracy theories. Of course first set time and place, and then figure out a conspiracy theory. If one can find a conspiracy before the fifth time of picking a random place and time, then i might be convinced that it is too easy to make conspiracy theories.
I bet secularizing organization improves them in a more sense, it takes out irrational arguments, or at least arguments for which the origins are unclear.