Is anyone working on a system where the battery is stored on the trailer? You could have chargers at the loading bays, and the drivers would just swap trailers

Is anyone working on a system where the battery is stored on the trailer? You could have chargers at the loading bays, and the drivers would just swap trailers for the return trip. I could see it being a great option for warehouse to warehouse runs like Costco, FedEx, and the like.