While this would be a cool feature, I think it's somewhat redundant.
It's faster to open your phone, find the address and then say "navigate to 123 Main Street" instead of opening your phone, finding the address, copying it, opening the Tesla app, pasting it, and hitting send.
Though I also put the address into the calendar, I like big brother (cough Google) being able to tell me how long it'll take me to get to my next appointment, how early I need to leave, and if there's traffic along the route.