Remember kids... always wear a helmet. (The almighty bikeradar helmet thread)

The way I see it, youre going up a road, suddenly a car pulls out infront of you without looking, you break, but the momentum plunges your front wheel into the side of the car and you flip over the bonnet.

Or you could ride in a manner that'll prevent a collison with the offending motorist.

why not try and prevent such collision instead of preparing yourself for an impact? the former is advisable.