I work throughout the desert Southwest with numerous cell modems for real-time data collection. I was initially excited to find new shape files to include on planning maps, but this map is wildly optimistic. From personal experience I can note several areas that have involved significant efforts to achieve low data rates from anywhere in the vicinity with limited success— there is zero chance someone with a normal handset or consumer modem can expect "broadband" speeds in any way in these locations.

How anyone (carriers or FCC) thought they could publish this nonsense without many people immediately realizing the quality of the data is beyond me.