I would think that 100 extra pounds, coupled with the inherent energy loss from inefficiency, would be a significant factor in the car's range. That's 75% of o

I would think that 100 extra pounds, coupled with the inherent energy loss from inefficiency, would be a significant factor in the car's range. That's 75% of one extra passenger. This site (http://www.jurassictest.ch/GR/ http://www.jurassictest.ch/GR/) lets you plot a course for several EV models and set up some parameters such as weight. Adding a passenger to a Tesla knocks 9 Km off the range, according to them.