Deploying ground-based infrastructure is difficult, especially in a place as inhospitable as salt flats. GPS (really, multi-constellation GNSS these days) is n

Deploying ground-based infrastructure is difficult, especially in a place as inhospitable as salt flats. GPS (really, multi-constellation GNSS these days) is not only easier to physically set up, it also gives you more data, and likely more accuracy. You don't save the PVT output of the receiver on the vehicle. (I mean, you could save that too, I guess.) You save the raw observables, and post-process along with data gathered at the same time by stationary reference stations. (Either run your own base, or use data from networks like unavco.) This gives you a remarkably precise picture of the vehicle's position, motion, and acceleration, in 3 dimensions, throughout the entire run. If they want to be transparent about it, they'll publish a multiconstellation RINEX file of the whole shebang, so anyone can analyze it themselves. There might be fewer internet sleuths who know how to sling rtklib or gpstk than youtube-dl and audacity, but the ones who can, will produce a wealth of data. For bonus points, put two receivers on the car, a few feet apart. This allows moving-baseline so you also get an orientation solution. 1: http://rtklib.com/ http://rtklib.com/ 2: https://gitlab.com/sgl-ut/GPSTk https://gitlab.com/sgl-ut/GPSTk