I've been driving my Clarity for close to 3000 miles and have managed to avoid using gas for most of that time. I still have a nearly full tank from when I purchased the car. And for the brief period I needed to use the gas engine on a previous occasion, the car handled reasonably well. Though the terrain was fairly flat. But last night, I was unable to charge and was driving home on gas. Generally, the car performed well. Until I had to climb a hill over a sustained period of time on the way home. That's when it seemed to struggle as the grade steepened. This was one of my main concerns about the Clarity and while it wasn't horrible, I was disappointed. I know at some point, driving on the gas engine is going to be unavoidable. But at this point, I'm gonna be even more mindful of keeping the car charged at all times when possible. Just wondering what others' experience and reaction has been to this.