We went to Costco, which generally is a decent experience, and was. My wife wanted to stop at Soma, so I let her out and stayed in the car with the engine running.
The engine would run maybe 30 seconds and cut off, then 30 seconds on battery, then 30 on engine. I had just filled up, and my mpg meter said 3.6 mpg, which is the lowest I've seen. I was watching the battery recharge bar shrink and then climb. Made me kind of curiously happy in a way, and I was cool.