I've spent a good hour or so looking at those skid marks from diff angles and diff pics.... Sure the skid marks stop on the wrong side of the road, but if you look at the damage, the caravan rolled up over the bonnet of the car. This means the momentum of the wagon didn't stop dead at the impact zone, hence why the skid marks continued onto the wrong side of the road.
Either way jojo glad you're ok, and let us know as a community if there is anything we can help you out with...