And it is simple to disconnect it on a Zoe and a LEAF at least. What do you get through the unit that you cannot get for free in terms of Sat Nav etc. on your phone?Many cars already have a telematics unit fitted so it would not be a big leap to use one to disable a vehicle if the VED is not paid. It would be easy enough to only disable it when it's shut down. A text warning and automated phone payment system would then re enable it.