Don't know. I was barreling down the highway at the time I took the picture, and I don't usually do speed tests anyway. But considering the available speed used to be zero, I'm going to say it's decent, sure.
On my way home today, I'm going to take a long route to check on some more sites I don't usually go by. Expect the Premiere map to fill in some after I get home.
(Also, I'm amused that with yesterday's update to the Sprint coverage map, the Red House tower that's on the air is now missing from the map along with the Hat Creek tower, while the Sugar Hill site that had no antennas two weeks ago is still present.)
Because public WiFi has an ongoing maintance cost, plus the cost to set it up and properly isolate it from your network. The magic box is just easier. You aren't responsible for it. The magic box (via LTE) also has vastly superior QoS so that one person won't bog it down.
My parents house is one place where a magic box works amazingly. Their only internet option is 3 mbps DSL. B26 only on phones, and that's upstairs only. The magic box latches on to b25 and provides 15-30 Mbps consistently. They actually use it now with a Sprint mobile broadband plan. For some people, the magic box is a better solution than an Airave or wifi calling (which won't work well on 3 mbps DSL if someone is using the internet). For businesses, it's a $0 cost, easy deployment to help customers. And they aren't responsible for what people do on it.