Two words: tractor motorcycle.
Farmall Cub body, International Harvester engine, Crosley transmission, Model T taillight.
Motorcycle/camper hybrid - photo
Log motorcycle - video
John Deere tactical tractor
1880 Human-powered tractor with dreadnaught wheels - photo
tractor powered by Buick Nailhead
Dying man carves last will and testament into tractor fender
Ford Flathead-powered 1970s John Deere lawn tractor
1950s double-engined Fordson tractor - videos, patent, and photo