I imagine it's the tree game. The Leaf builds a pine tree next to the speedometer, and you can complete up to 5 trees by driving as eco-friendly as possible. Th

I imagine it's the tree game. The Leaf builds a pine tree next to the speedometer, and you can complete up to 5 trees by driving as eco-friendly as possible. Then you can upload the trees you build through the car's internet connection to compete on a leaderboard with other Leaf owners. I don't participate. I figure I'm already doing my part to save the environment, and the measly extra kWh I'd save in a month by driving like that isn't worth it. I'd rather have some fun. I do drive 55 on the beltline, but that's the speed limit. I'd only get to my destination a minute faster by going 60. There's nothing about the car itself that limits driving normally. Even in ECO mode all of the acceleration is there. It's just farther up the accelerator.