Just a quick story about a stupid guy:
It happened to a woman I worked with a few years ago.
Her boyfriend was installing a new windshield in her car. This dude (not the sharpest tool in the shed) is working in his garage on a cold winter day in NH. So, he figures he'll start the car and let the heater warm the interior of the car while the engine warms up the garage a bit. The idea is to keep things warm while he installs the new windshield. About 3 AM the girlfriend hears the car running and wonders why he ain't in bed yet ("yeah babe, I'll just be down here a few more minutes") so she checks on him. The idiot had all the garage doors and windows closed, and had the car running <img src="/forums/images/graemlins/notooth.gif" alt="" /> She found him passed out and slumped over the center console of the car. He survived, but it took close to 3 months to recover from the carbon monoxide poisoning! He spent over a week in the hospital.

So be careful putting that new windshield in, people get hurt doing that!! <img src="/forums/images/graemlins/lol.gif" alt="" />