We recently decided to use for a 2000+ mile road trip instead of using our ICE minivan, and I was blown away with how well the Tesla did as a long road trip vehicle.
We had no range anxiety because of the Super Charger network, and stopping to charge for 45 minutes after driving for 3 hours was far more enjoyable than anticipated.
Where it really did well was also surprising. Have you ever been going up a slight grade on a long highway stretch and find yourself needing to pass a slower vehicle? Most cars I've owned, when already going 65+, take a bit of time to pass a truck going up a hill. Even my 400HP+ modified Subaru STI takes its time as it needs to build turbo pressure and RPMs before it'll get fast enough to comfortably pass up hill.
The Model 3 doesn't even know there's a hill. It'll go from 60 to 120 as fast as it goes from 0-60 like the hill doesn't exist. Fully loaded with 4 adults and their stuff too.
Combine the raw power the car has with the climate control, good sound, full glass roof, ample cargo space and legroom, and it's the best car I've ever used on a long trip, no question. It's just not sub-$40k (at least for most people - I bought mine for $35k from a family member).