Re: side on impact
So clearly you never saw the episode of mythbusters where they tried to use the bonnet of one car as a ramp for another. That myth was busted IIRC.
But in all seriousness it is very difficult to predict when a car will roll. It's often surprising which vehicles pass and which fail the elk test. One thing you can be pretty sure of is that the Volvo, being a Volvo, will have passed the elk test. As such it should be pretty damned hard to roll.
The photographs of the aftermath don't make it clear how the car was rolled, but visible damage to both cars does not speak of a high speed impact.
Biting the hand that feeds IT
