spitfire
Walty McWaltface
I have my doubts that was a truck bomb - on some of the other clips there is very little debris even close to the site of the blast, and the damage is very localised:
If I had to guess then its either a really small bomb which set either the fuel truck or (more likely) one of the rail cars into a BLEVE (which then caused another BLEVE as the other object blew up), or its happened as a freak accident. I lean towards the latter, mainly because of the extreme difficulty that someone would have to time that so accurately (as in to time it when the truck passed the train above a weak joint in the roadway) - which also to me makes a missile or drone strike unlikely too. Only God is usually that precise.
What's a BLEVE?