Locus (not to be confused with this Locus) is one of those names that’s been popping up a lot in the news -- and this roundup -- over the past year. DHL has been a big (or the biggest) name in the mix since 2017. At last count, it said it had deployed around 200,000 across the U.S. alone, which puts its right around the same number as Amazon (which admittedly, hasn’t updated that figure lately).