bummer. like john asked, were you totally in your lane? (the middle lane)
it's hard to tell. however, john is right about trucking companies settling - if they get into accidents and those accidents are reported, their insurance goes up BIGTIME (here in canada at least). if the police are involved, then you are at their mercy as to how the rule it. are the police involved yet?
peter
EDIT - looked at the pics again, looks like the impact was mostly from behind, right on the corner, and the rear quarter panel buckled. if that is the case then it is likely his fault. are the police involved yet?
peter
2004 330i ZHP
2005 330iT ZHP
2010 328iT M Sport