At some point, the petrol stations start closing, and petrol vehicles start having range anxiety. The antiques get served by a little EV bowser service that comes round and delivers, but you won't be able to drive them in cities.
(diesel will hang on a lot longer, so there may be a period of refinery retuning and petrol stations serving only diesel?)
(diesel will hang on a lot longer, so there may be a period of refinery retuning and petrol stations serving only diesel?)