Washington's carbon tax rejection isn't as big of a deal as it may seem. Most of their electricity generation is already from hydro, they are one of the biggest EV markets, and already have some of the lowest emissions of all states. The fact that there was 20x as much money spent opposing it as supporting it is rather telling.... Carbon taxes are being implemented elsewhere, including Canada, so it's only a matter of time before it happens in the US, though it already has in a few places locally (including Montgomery County MD just outside of DC).
The bigger disappointment is that Arizona rejected a 50% renewable portfolio standard, though it may be irrelevant since they're already developing so many solar projects.
As for EV charging, I think battery switching will become a more viable option as EVs become more common, but there is a lot of R&D being done to improve the energy density of batteries.