Hello. I'm new to the site and I hope someone can give me advice on this trip. I'm moving out of California to New Jersey this first week of November. I'm planning to take the south route and see some nice places also. I definitely want to stop at Grand Canyon but is it worth it to do a side trip to Hoover dam by taking I-15 first instead of going straight to GC? Also, is I-40 a safe place to drive for a lone female driver? Any suggestions on places to see and to stay along I-40? Also for I-81? Any help is appreciated.