It's depressing how the idiot drivers rarely suffer the most when they cause crashes. Also I think I'll have nightmares tonight!
Still, it hammers home the message about defensive driving.
you can also buy a door stop with a alarm in it, but of course this are a nice cheap solution and it should work just fine.
In my young and wild days we have used these as "detonator" for DIY claymores, works just fine and if you are serious you can make a guy cut himself in half, or like we did just scare the living hell out of people.
I visited South Park, Colorado last week. Wasn't a specific trip, it was just on the way to where I was going. Nothing special there really, just looked like any other old town with rickety old buildings and small houses.
It's part of the city of Fairplay - it's not its own city.