I guess it depends on the condition of the bike. But if it is 'grail' I am also assuming grail condition, so it is ridable.

I'm going to say ride and show off.

New question:

You go out riding on your nicest/favorite bike and get ten miles, then it begins to pour. You have no way back except to ride after it quits raining. The problem: There are only two ways back: one way is through 5 miles of .5 inch mud, one is through 5 miles of 2 inch deep water and possible potholes. Which way do you take?