Thanks for correcting my mistake.

If the connectors were not so kooky. . . J1772 was actually fine, they punched it up to 120A at some alpha rev that never saw the light of day, and frankly there is nothing that prevents it from conducting 277v, it's all about the on-board charging systems, and allowing for DCFC. I keep a NACS to J1772 in the car whenever I travel! I've never had to use it.
Back to the OP's query, 150mi should not be a problem, and to your point, when you get there just find a place to plug-in. I go to Show Low ~179 mi. There is a DCFC there, but I sometimes stay at a cabin with a 110v outlet. I use a 110v evse and slow it down to 1KW (9A ish). Keeping it plugged in whenever I'm at the cabin, over the course of the 2-4 days that gives me drive-around juice, and enough extra to coast back down the mountain to home without stopping. As you get more familiar with how far you can actually go it's easier.
I also swapped the abysmal EVSE they give you for a cheapo L2 120/240v
20A (Not 16) variable rate EVSE, with all the adaptors/gender benders for the various plugs you might run into. 240v/20A = 4800KW, which will best case pretty much charge you up in 10-12 hours if you can find a circuit that will run it. I like the 20A units because they usually ship with a NEMA 6-20 plug which is easier to handle, and if I do break it out, I'm really only looking for an emergency charge, or I'm overnight/extended somewhere and likely to be able to stay plugged in for an extended period at a cabin or someones home where I can tap into the golf-cart charging plug or something.
Think back to when you were broke, and you knew exactly how low the needle could go before you had to put gas in your car. . . Now that you are older, you still kinda know, because you fill up full with 12gal in a 16gal tank, and the needle was right there, ahh I can go lower in a pinch if I'm in a hurry and don't have time to hit the station,... Same song except the car is really giving you more information, and a better estimate.
