Sorry to hear about your mates Principia. They're frightning bikes anyway - had one come in for possible repairs and the frame broke at the water bottle boss. Read: Full water bottles killed the frame!

Depending on how the bike was attached to the roof, all the bits should be okay. Obviously I'd toss anything that looks like it took a hit.

If he needs a quote for insurance or needs a shoulder to cry on, get him to give me a bell on 03 8309 0005.

Was it here or on mtbr where there was a thread about driving your bike into the garage where some drongo had done it multiple times and actually though it wasn't enbarassing enough NOT to tell everyone?