In turn, this movement of the floor pan allows {HEAD ~ the seat} to move in {TAIL ~ the same direction} as the vehicle roof maintaining the distance between roof and seat 
to move in
In turn , this movement of the floor pan allows { HEAD ~ the seat } to move in { TAIL ~ the same direction } as the vehicle roof maintaining the distance between roof and seat
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH