How the BMW i3 really works

We bought our 2017 BMW i3 with Range Extender yesterday! As city dwellers without our own garage where we can plug in at night, we got concerned that the charging of this wonderful machine was going to become a real headache. We were comforted this morning when we found this video on how the range extender works. It is a small gas-powered motor that acts as a generator in the car to allow you to drive indefinitely on fuel, provided you don't have to climb long hills without a full charge.