Once I was on a roof when a sudden gust blew my ladders down. So there I was, suck in the air, not a soul around to help, and the customer wasn't in!
Fortunately, I had my mobile with me, and a friend who lived nearby who came to the rescue. (though I had to endure jokes at my expense for a few weeks)
If they'd have fallen on the customers car, (Or the customer!) I'd have been in trouble. And if I'd not had my phone, I'd have been really stuck!
My advice? Wind = Car > Home > Cuppa. Its just not worth the risk!
The Silly One