[derefr]

Is that really how "city blocks" are supposed to be modelled? AFAIK a "block" is one atomic unit of a particular grid of city streets — and a city can have multiple such grids, with different block sizes. Like a computer with disks with different block sizes. It's my impression that the Las Vegas strip forms its own distinct grid, with very large blocks.

[LorenPechtel]

No. The Strip doesn't have a separate grid. Rather, it has many objects which occupy multiple grid cells. I'm looking at the Strip and surround on Google as I write this--and it is completely clear that the Strip properties are far above normal city blocks. (Admittedly, I'm a backcountry hiker and thus more used to map reading than your typical city dweller that always uses Google or the like.)