It doesn't even matter if people don't get rid of their petrol boxes, as long as they are kept as a second car for the very rare long-distance trip.
I refuse to believe that people wouldn't get attracted to a small and INEXPENSIVE small electric car for daily usage and commuting. We just need to sell them on this: keep your ICE if you want, we don't care as long as you get this cheap electrical econo-box. Yes, it only gets some 60-80 miles of range, but we are not telling you to get rid of your SUV, you can keep it, this is your SECOND car.