I was stopped at an off ramp on 101 and BANG, this Passat going at high speed slammed into me from behind. I saw it coming so I braced and pressed my brakes. Fortunately my hitch was on so it took 100% of the impact. Fluids sprayed out of the gaping hole the hitch left in his engine compartment. His car was not pretty, his car wouldn't start. We exchanged information and I drove away.
I guess I need to bring it to the stealer to check for structural damage?
Yes, I know, this thread is useless without pics...fortunately I had a disposable camera. I will upload pics of the damage tomorrow.
Update: Here are the pics.

For those modding your cars...add a hitch to that list. This would have had a very different outcome without it.