If the bed sticks out in the road it obstructs the road and those attempting to drive, or emergency vehicles that may need the entire roadway just to navigate a parking lot. Most angled and perpendicular spaces are considered to be between 10 and 18 feet long, the truck I drive is approximately 22 feet long. Many parking lots barely accommodate vehicles driving both directions between rows of parked cars. Add in the extra footage of a truck bed hanging out into the lane and you on exacerbate the situation. Plus pedestrians are forced to walk further in the driving lane when they have to walk around the same truck bed. With the impatience of most drivers, I think taking a little more of the parking lot is a better choice than taking part of the road, my truck, their car and pedestrians are all safer. Maybe driving trucks for so long gives me a different outlook on it and I doubt anyone's mind will be changed. But, if the guy can't put it in the center of the spot give 'em hell.