Watis wrote:But bear in mind that, on the coldest winter mornings, the water will run off the car onto the ground, where it may freeze. So be careful not to slip on the ice that forms - your screams may wake the neighbours!
Watis
The car is also a large cold heatsink, so I'd be concerned about the water spreading around and then freezing. Wiper blades, door locks, etc.
I prefer scraping (not even de-icer spray), it's a dry process and no excess water to then potentially freeze.
But I do keep the car in the garage so in reality it's rarely a problem for me.
--kiloran