Well, I managed about 100 yards on the Airhead this morning until I could find a safe point to turn around and risk the same 100 yards of sheet ice uphill back to my house. I wasn't going to risk another 1/2 mile of that lot.
I kept the bike upright by my sphincter muscles alone I think. 
We've got snow now been falling for a few hours. I'm definitely taking the car tomorrow.

On the upside, at least I didn't subject the bike to any salt as I didn't manage to get as far as the road.