An Electric Conveyance Vehicle (ECV) is more aptly and popularly referred to as a scooter or an electric scooter.
Some attractions will enable you to bring your scooter directly onto the attraction and some will require that you leave your scooter parked either outside the queue.
To rent a scooter at the Disney World theme parks, it’ll cost you $50 a day plus a $20 refundable deposit.