So I work for a pizza place that makes us put these toppers on our cars. In doing so I have lost 6mpg. I was wondering if anyone out there had any experience with where to put it on the roof of my car to minimize the effects of the topper. We have to have it run across the width of the car (Door to Door) The length and Height dimensions are 16.5" W x 6.38" H. For a picture I found the supplier companies website
Mini Quad Car Top Signs. I drive a 1994 Geo Metro 3 cyl 5 speed 2dr hatchback. I am already doing what I can driving wise.