<p>I don't have a high top but have a ladder rack and solar panel on the top.<br /><br />My experience is that some parking ramps are even too low for a standard height cargo van with just a vent on the roof. I scraped the roof vent at a hospital parking ramp one time. <br /><br />Now with the ladder rack and solar panel, I'm not able to park in most ramps. I don't park in or drive through anything that doesn't have at least an eight foot clearance.<br /><br />Fortunately, even with a roof rack, even I can get through the fast food drive up windows but keep a wary eye on upcoming overhangs.<br /><br />I do have to wash the van roof manually, but by standing in the doorways, it is possible with the wand. If would be more difficult for a shorter person or perhaps for a lady.<br /><br />If you go with a standard height van, don't put anything higher than a roof vent (such as Fan-tastic type) on top and you should be okay in many parking ramps. There are still some that might cause you trouble.<br /><br />V.T.</p>