The East Coast ones certainly appear useful:
- one splits the 136/137 mile gap between the two Ports (St Lucie and Orange), which helps travel to points between and gives better Supercharger stop options. (It looks like Tesla plans to increase Supercharger density along Interstates quite a lot in 2017.)
- another is in west Miami which would help people to avoid a large diversion to the Plantation Supercharger if they want to take I-75 or US-41 to the west.
Agree.
Miami: There was speculation a few weeks ago that Tesla might place a Supercharger near the I75/Florida's Turnpike junction. That seems unlikely to me, as do most Northwest Miami locations, because they are all within 10-15 miles of Plantation Supercharger.
Another prevalent speculation is the Dolphin Mall, at the junction of Florida's Turnpike and FL836 close to MIA and easy to reach (non-rush hours anyway) from I95/US1, downtown Miami and Coral Gables. That one has copious excess parking areas as well as plentiful shopping and mall food choices. If it happens at all, I'd bet on this one.
I'll be pleasantly surprised if it does happen because after years of promises and thousands of Teslas in Miami-Dade, as well as plentiful winter visitors from the Frigid North, we still have no Service Center nearer than the hopelessly overcrowded Dania (they try very hard but are ill-equipped for the number of cars they handled two years ago, much less now.)
The SC in Coral Gables did have a Supercharger co-located in the 2016 plans that have come and gone.
Two Ports gap- that is a crucial one for the winter crowd. There are quite a few Northerners making the trip from the NE to SoFl. At normal I95/Turnpike speeds the two Ports are a trifle too far apart. The previous critical gap was solved by Kingsland, GA, which has acted to increase the density of visiting Teslae from the NE. This gap is probably critical to be installed before Model 3 appears.
Interstates: There are many critical points before the Model 3 hits in volume and Tesla seems to be working hard on the most heavily used ones. I-80 is now nearly complete, I-10 keeps improving but now the big unfilled gap is El Paso-Tucson. Lots of other important gaps too.
Florida overall: Because of all those crucial points in low-population-density high-trans-continetal areas it seems plausible that Tesla will deploy maximum effort to plug all those gaps and similar ones in Europe (especially tourist-activity-dense East and South-East), new countries such as Taiwan, New Zealand, Korea etc. Just thinking about all those priorities and adding Mexico, Brazil and a couple other places with zero today, but with Model 3 orders already placed, in Tesla's place I'd not put too high priority in Superchargers in US Metro areas, including Miami. Instead I'd place maximum effort on installing a plethora of Destination Chargers everywhere possible.Oddly, it seems that is just what they're doing.