I've seen a mini in a 15mph accident and they fold like cardboard. Like he says, the DC5 went under it - otherwise it would have been completely knackered!
Shame to see this...but seeing the damage to rear - you seem to have been lucky not to have been punted elsewhere by the van too. Hope your injuries heal up quick and that the witnesses testify to the police about the idiot in the mini.
Im sure you'll have another car sorted out quick judging by your positive attitude in that respect. xthumbsup