Today I was driving home from Georgia and I saw a truck pulling a trailer with a spool of wire that was about 5 feet wide and at least 6 feet in diameter. It was insulated with orange plastic just like the extension cord that I use on my leaf blower.

It must have been an electric truck, and they were getting ready to drive it to the West Coast. I always wondered how they could take a long trip in an electric vehicle. Now I know.
Howard