BOOM! then no go...............

[SuffolkD at aol.com]

200 20V Quattro sedan 3B
11:PM Driving home after a 550 mile weekend and 1.3 miles from home.........

BOOM !

Thought I ran over something and then car no go.
Nuetral, that's it, rolled into a parking spot along side the road and hiked 
it home.

I went back to look for a fallen off part (which I swear I ran over) and 
nothing.

So here's what I know an hour into this.
Shifter feels okay, shifts into gears but none work.
Car rolls like in neutral.
35 MPH, just driving along.
Car idles and runs fine.
No visible items dragging underneath.  (suspected CV but who knows)

Haven't tried moving it after pressing the differential button.
-Scott by BOSTON with car no go :-(