Only time we print vertical panels is for box trucks. Anything else Horizontal Panels. Less seams... less headache. I believe its faster too. 2 person can wrap a side of a car or van in 1 hour maximum 1.5h. You dont have to reprint the WHOLE panel all the time. You can reprint only fenders, rear doors etc. Of course when you doing a van and the cargo area gets messed up then yess.. you have to redo the whole print from the door back. Fortunately its really rare.