If I'm on a long trip, I need a charging station that can charge reasonably quickly, because I don't want to stop for 12 hours, or 4 hours, etc. I'd like to stop for maybe 45 minutes while I eat lunch. Therefore, it has to be one of the larger (higher power) charging stations.
For the most part today, if you want a car for inter-city travel, owning an EV as your only car is not for you. I know of people who have traveled from San Francisco to LA in a Roadster - it is possible - but not nearly as convenient as a gas car today.
Today you either still need a second car (gas powered) for the occasional trip, or plan to rent a car when that happens (or fly, or train or something).
Tesla has announced some possibilities for the Model S to allow for quicker charges - but the Model S is far enough out that no one is building that infrastructure yet, and likely won't for a few years.
EVs are not for yet for everyone. Pretty much the pre-requisites for an EV today are:
1) own your own house with a garage you can use to charge
2) own more than one car
3) have the means and be willing to buy an expensive car
3 usually implies 1 and 2. There are the uber-EV nuts here which will tell you you don't need #2, or ways to get around #1 but for the majority, you need these 3 things.
Eventually, we will get to the point where
a) there are enough EV early adopters that a charging infrastructure will exist because there will be demand enough to make it economically viable,
b) the cost will come down which will compound a)
c) the range will go up reducing the need for a),
and d) people will be comfortable enough with EVs to realize that they do not need their EV to do everything (much like I don't need my Mercedes to be able to drive me to Hawaii...). That day is not today.