Anyone used conjoint analysis to figure out EV feature priorities?

Conjoint is actually perfect for this use case — range vs price vs charging speed is a classic trade-off problem and exactly what it's designed for. I'd go with a simple CBC (choice-based conjoint) in something like Qualtrics or Lighthouse Studio, around 300-400 respondents should give you solid part-worth utilities. Definitely not overkill if you want to actually quantify how much range people will sacrifice for a lower price point.