A convertible vehicle is provided in which a flatbed unit can be used to convert {HEAD ~ a tractor} into {TAIL ~ a flatbed truck} when the tractor is not used for towing a trailer unit 
into
A convertible vehicle is provided in which a flatbed unit can be used to convert { HEAD ~ a tractor } into { TAIL ~ a flatbed truck } when the tractor is not used for towing a trailer unit
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH