Vintage pick-up trucks

We hook a hose to the garden tractor exhaust and feed freon into the carb. This produces phosgene gas. The hose is fed into mole tunnels to get rid of them.

 

We did the same type of thing to get rid of varmints when I was growing up.

 

Saw the photo in the post above recently on the book of face.
The information accompanying the image said that GM had purchased one of each of the competition's trucks to compare with their own.

 

International Harvester.