Ah - in the last few weeks ... I won't hold my breath. It's a feature that's been requested for *years*, judging from the Google forums.
So does HERE. (In theory the inbuilt Citroen satnav does too. But aside from the out of dateness of it all, it only seems to have 1 in 10 roads covered.)
I first encountered HERE for Windows Phone (the best smartphone operating system ever ...). really nice (configurable) display. So I've stuck with it.
If it could be set to open up automatically in "driving mode" it would be perfect.