A mere 2 hours drive from The Valley, Tucson is a quick visit from Phoenix. Perfect for a day trip or overnight if you're in town. The drive to Tucson is pretty flat, Picacho Peak is a great exception to this (and also the site of the Western most Civil War battle). Hit the I-10E, and exit 258 for Congress Street, turn left and you'll be pointed directly at Downtown Tucson.
You have a great Supercharger network en route to Tucson from Phoenix.
In addition there are a number of other charging options:
Tombstone is just over an hour away, site of the famous shootout at the O.K. Corral between Wyatt Earp and Billy Claiborne & their respective crews.
Bisbee is about 1hr45m from Tucson and the home of an old mining town built on the side of a mountain. It's known for it's art galleries, bars, historical hotels, and eccentric locals. There are a ton of mining museums and sites to check out.