If there were SuperChargers in San Luis Obispo (and perhaps Santa Barbara), then 101 could also be used, as an alternate/additional route to LA. Some prefer 101. Some prefer taking 5 one way, and 101 the other way, makes it more interesting (and usually the way back isn't as time sensitive). Would take load off Harris Ranch (and also Tejon Ranch). BTW, especially for the my-first-Model-S-long-trip, 101 seems more attractive than 5. And with a SuperCharger in San Luis Obispo, one can also take the scenic route Hwy 1 between Gilroy and San Luis Obispo!