Some people do a lot of puffing and exaggerating. Some are the kind of people you NEVER want to be behind on a two lane road. Most of us were satisfied with having pretty good mileage in a decent car. Unless gliding is a euphemism for lying. There are some routes that I take that resulted in almost 50 mpg, but that is very rare and my constant mileage was about 40, usually slightly under, sometimes slightly over. If I filled up while on a fully charged battery, I could ride home (perfectly flat road and little traffic) and take a picture of the mileage at a HUGE mpg, but that only lasted till I worked the battery down and it needed to recharge. Enjoy the car and don't sweat trying to match some non proven claims.