I love the idea of saving trees by driving an EV and the Leaf has a nifty little graphic display to the left of the speed on the dashboard which draws a tree, branch by branch, as you drive ecomomically to show you how well you are doing. I've noticed, however, that when you reach 5 trees (one large one and 4 little ones), the trees stop growing nomatter how economically you drive or how long your journey. I had been expecting on a recent long journey for the tree display to switch from one large and four little trees to one tree followed by a number like 6, 7,8 etc. with the number increasing as you drive but it doesn't. It just stops at 5 trees! Such a shame. I was hoping to start my own tree-saving competition!!