Maybe we have it and I can't find it/use it, but it sure is nice to have. Allows you to click on each end of a road and have the route filled in for you, rather than having to click waypoints along that road. This site has it:
That's a new feature released by Google not too long ago. We'll get it in eventually but we're working on a couple other things at the moment so it'll have to wait for right now.