Android Auto

[catsrcool]

Not sure whether to post this here or in motoring.
Is anyone using Android Auto with multiple waypoints/destinations on the car display NOT the phone display please?
If the answer is yes are you able to plan the route on a PC and send it to the phone or has it got to be done (if possible) whilst in the vehicle?
Not found a definitive answer on the internet.
Not been able to get the route on the phone yet from the PC :-(