+1 for how frustrating the in-car Google Maps can be. Adding a new charging stop mid-route is also a nightmare. We were driving and wanted to stop off at a known station to charge. No matter what, we could not get it to show it as an option. The "Search this area" simply doesn't work. The solution was to end our current navigation, add the charger as the destination, and then add a second stop to our actual destination. Of course, when we got to the charger, it seems the "pin" was off by a couple hundred feet, so the car didn't sense that we had arrived at the charger. As a result, the screen telling us to "charge to X%" never popped up, instead telling us our charger was "1 minute away".