May I ask what kind of car it is and where the road trips are from/to?

The last time I rented an EV in the SF Bay Area (a year or two ago, a Leaf), I had trouble even finding enough charging stations just to get around the area, like from SF to the South Bay and then to Santa Cruz. The few chargers I did find had several broken stations, multiple people waiting in line for the one working one, and it was very expensive. We wasted hours of time on that experience.

Has it gotten significantly better since then?