If I want send route to my in-car device I cannot do it because when I press Send on Livemap it sends the route always only to my phone.

This is probably due to the fact that phone is always online but the route should be sent to all devices which have the Waze app with my account logged in, also to those which are offline so that those would receive the route when powered on.

Route planning via Livemap in it's current state is quite useless to me because of this.