You’re probably right bout the purpose of the slot. Like I said, I’m a noobie and just speculating for ideas. The idea of cutouts for the rear wheels is doable, I’m just wondering about the wheelbase on different cars coming into play. Even cutting the slots the same, that would really add to the build time of the box and the idea is to produce a good box that would be affordable. I was thinking of a strip glued across the slide that would let the car rest on it ahead of the rear wheels and hold the rear off of the slide. This may be a moot point anyway. It seems I read something about the tires developing flat spots and this would just be a way to alliviate the issue. But then, it may be a non-issue.
Anything that would keep the cost down would be benificial. Looking at these boxes again, I may have spoken to soon. Even at $200 for a box that would hold a dozen cars and have 3-4 drawers, those guys aren’t getting rich considering the amount of detail that goes into cutting out all of the small pieces, fitting, glueing and finishing. Like most good craftsmen, they probably are doing it out pride of creating something really nice and just making enough to cover their materials and put a few bucks in their pocket.