This is a question for you gentleman. My Fiance is driving my Prius when we go places. He drives like a bat out of you know where, frequently accelerates too fast and won't use the cruise control. How do I "train" him to drive my Prius without hurting his feelings? I have made a comment like "Sweetie, I need to teach you how to drive this car so we can get good MPGs". So I have introduced the topic. I'm thinking of leaving the consumption screen on and challenging him to keep the MPGs above 50. Any suggestions on how I can train him? I don't want him driving my 2010 in the same fashion when I get it. Thanks.