Car crash?

One of my girlfriend's friends earlier told of a car-crash her cousin had been involved in. See if you can spot the inconsistencies.

"My cousin was at a junction, not over the line, when his car was hit from the side by another car which must have been travelling at about 100mh...It caused my cousin's to flip over 3 or 4 times. The other guy just backed away and drove off. In court the other guy said he liked smashing peoples cars..."

Can you spot them? Well, a.) If he wasn't over the line he couldn't have been hit at a junction, unless the other idiot was travelling on the pavement!
b.) If the other guy had crashed into another car at 100mph, both of them would have been killed. No if's and's or but's. They'd be dead.
c.) It wouldn't flip the other car. And definitely not more than once. The frame would have bended, the entire chassis would have been completely mangled, but it wouldn't have flipped. There was no way for the car to become airborne in such an event. NO way.
d.) Just saying the rest was true up until now (It isn't), the other car couldn't have 'driven' away. It does take a lot to destroy a car, but it wouldn't be so much destroyed as obliterated. There'd be barely a recognisable car left! At a combined speed of 100mph between too Trucks Mythbusters found that the car had almost been pancaked.

So, if you'd like to tell us the real story? Please, go ahead!