Garage/exhaust ventilation

[Hster]

Reading through Joeypocono's, lengthy unresolved thread, "Is there an electrician in the house". He said, "Let car run at fast idle until the canary in my garage died." I laughed so hard I cried then I realize it was the exhaust fumes that caused the tears. (Sometimes running rich ain't so bad)

With the onset of the cold weather I would like to work on my car without freezing or asphyxiating myself. I'm thinking about getting a garage exhaust vent hose and carbon monoxide detector. What solutions have any of you used for ventilation? I welcome suggestions. Thanks