This reminds me of a near death experience i had years ago.

Hammering along the motorway on a very cold night doing about 80mph in an old diesel astra van and heater is on full blast onto the windscreen to keep warm and to stop it freezing. windshield/windscreen whatever starts to get a bit dirty after passing a truck so reach for the screen washers and hit the button. Now unbeknown to me the pipe has popped off screen washers. So hit the button and water from popped pipe shoots straight down the fan intake for the heater hits the heater matrix and turns straight into steam hits the screen and instant fog up. This is while hammering past a lorry in the middle of the night on an empty motorway.

Yikes not fun.