I know it will explode on impact alone, but then we wont have an awesome team-attack with extra damage from sheer coolness... no, wait, that was Exalted Anyway, here's my action:
Throwing a semi-truck with explosives- Result: 16+6=22
DC: 29 (unless I missed something, it says its equal to my strenght bonus). Also, the explosion, which Im not sure how big the DC for that is (or are they treated as one big attack altogether?)