Yes & no. To give you a real world example, LilSki's Bridgehampton for AC was made with topo maps having 5' elevation contours & absolute heights at corners. While the whole track can't be scanned, there is aerial lidar available for the remaining strip of pavement going under the bridge down through T1. So we compared the two profiles and he was pretty accurate for his sources & method, yet that meant there were 6" differences. 6" is enough to make a noticeable difference in suspension reactions if the track is well-known. And many of the non-scanned tracks have noticeably larger errors. pCARS non-scanned Cadwell Park compared to the AMS scanned version? You can *see* the differences in pavement profiles! There's also a Brands Hatch out there with ludicrously steep hills, so bad the rF2 Clio has troubles going uphill. Me? I'm not spoiled because I don't have an iRacing subscription, but as laser scanned tracks trickle down to us plebes, they will become the preferred tracks. That's why I try to spread the word about free public lidar data to anyone interested in making tracks.