The model only works if users are forced to subscribe to a battery swapping service for the full life of the vehicle (or there is a large upfront fee to join with a used vehicle). Otherwise it would be too easy for a consumer with a worn out battery to do a one-time swap and get a like-new battery as a cheap alternative to very costly battery repairs. The dumped battery is likely to have very poor range and the battery swap company will need to dispose of it.