The use of SNR isn’t new, and so is the use of internet/wifi as a way to correct the gnss location in realtime using differential correction, where your vehicle send the location data over the internet to a server that finds the nearest pre-surveyed base station to correct these data with the difference, and that should give you sub 40cm accuracy. If more accurate locations are needed, why not use the industry standards like RTK algorithms (either RTK float with decimeter acutely or RTK integer with cm accuracy) that utilizes C/A code unique for each sat, Why would Uber trying to use monte-carlo with SNR/location only? Especially it looks like it only works on Android anyway.