Personally the real value I see in wearing something on my wrist is in having all the sensors give me data about my life/day and the possibilities that allows for.
Interacting with my phone is better done with my voice in the car and windows phone driving mode and cortana actually does most of the things that impressed you with android wear and the wp driving mode works over bluetooth which pretty much any new car will have. As good as it is though it could be far better and am somewhat surprised google hasn't done more with that yet (but i guess it would make android auto pointless)
Interacting with my phone is better done with my voice in the car and windows phone driving mode and cortana actually does most of the things that impressed you with android wear and the wp driving mode works over bluetooth which pretty much any new car will have. As good as it is though it could be far better and am somewhat surprised google hasn't done more with that yet (but i guess it would make android auto pointless)