Like I said, there are a lot of hub motors out there. Just remember 746 watts = 1 hp, and P=IxE. Lithium batteries are coming down in price, and unlike the 300 cycles you get from a deep cycle lead acid battery, they will give you 2000+ cycles plus for any given energy storage, are 1/4 of the weight. Some controllers offer regen if you want to stretch your riding range. Don't get crazy like I did, this scooter will out accelerate my Corvette to 40 mph, and if it was a bull in the rodeo, would have a perfect record, 5 riders tried it, 5 wound up on their butts.
A 500 lb battery trailer being towed by the scooter.