No. The reason it looks similar is because the cliff-face material is shared between the maps (though a different color is applied). When I put the assets together it originally was from Nevada Interstate, but I gutted it entirely, nothing besides road and cliff/dirt textures are shared. So you could say it was based on the assets, but nothing of the physical layout is similar. They are both arid/deserts, though. No road layout is common between them other than 'a looping highway', it's a completely different experience. The map this city is built upon is actually the sequel to Nevada Interstate, and was originally called 'So-Cal Interstate'. I had wanted to build a city in it all along back in 2016, but I didn't have the assets or knowledge of how to do it. I did make reservations that if I did it one day, the road-layout was required to accept it with minimal effort. So the roads that make up a majority of the less-populated areas of the map further from the spawn point are carried over mostly from So-Cal Interstate. Again, there's a lot of those roads now that have had significant asset/layout upgrades to enhance the immersion and enjoyment (and collision models) of the map. So-Cal Interstate should still run, but it will conflict with this map, so I wouldn't advise downloading it (and it's unsupported, the only one of my four maps to be deprecated/go unsupported, as this map succeeds it). When this map is done, only the road map / layout of the highways / rural routes will be similar, along with the general hue of the sand/rocks/dirt. So-Cal is also twice the square miles (or more, like 2.5X) of Nevada.