I just took mine on a fairly long trip, around 370 miles. I used the hold charge feature once the battery reached 75%. It was fun to drive through a hilly region, the battery got me up the hill, then the engine plus regen charged it back up to the set point on the way down the hill. I liked that I didn't have to touch the brakes.

The fuel tank is quite small, but it doesn't take long to fill.

Overall fuel consumption was around 6-8 gallons for the trip.