electric bikes?

Like anything else there is a wide range of bikes with what they can do and how much they cost.
My neighbor buys kits and builds his own. Voltage also have a wide range. Bought one for my wife a year ago.A Specialised Vado I think it's 36 volts. I recently got a Revi Cheetah and believe it is 58 volts.
We have a paved trail loop of 38 miles near us and we can do the whole loop on 1 charge.
Look up Bolton Bikes. They have lots of info and YouTube videos. I learned allot.