Amazon is in Tucson now

[royable]

16. Glad to hear it!

The interstate is great when you're pressed for time, but just about any non-interstate route in southeast AZ is better if you DO have the time. Any of the isolated mountain ranges with roads to them or up them are great trips---Santa Catalinas, Santa Ritas (Madera Canyon and Mount Wrightson and Mount Hopkins), Pinalenos (Mt Graham), Chiricahuas (with Chiricahua National Monument and Portal on the east side).
I'd forgotten to mention The Nature Conservancy's Ramsey Canyon preserve in the Huachuca Mountains, easily accessible on a side road from just a few miles south of Sierra Vista. Known for its hummingbirds.
Also, if you have time, consider the alternate route from Tucson to Phoenix via Oracle Junction, Florence Junction and Apache Junction. Or a slightly longer route through Oracle, Winkleman and Superior to Apache Junction, or even a little bit longer and more scenic (a stretch of the Gila River gorge) of Oracle, Winkleman, Globe, Superior, Apace Junction.
Cheers!