There are already millions of EVs in use as everything from commuter cars to semi trucks, and most owners absolutely love them, so I’m not understanding what “viable” means in this context.
If this is your use case, then an EV is really not for you (although the longest range EVs are getting close to 700km range). But I hear this argument a lot, and I wonder: how many ICE car drivers really do these long distance road trips with any sort of regularity? Pretty small percentage, I’d bet.
I just use water with a few drops of dish soap on mine, which is what Tesla recommends, I believe. Works remarkably well.
For my part, I cannot see ever buying another ICE car. Electric is so much better in so many ways. Although I might feel differently if I were not able to charge at home.