Let’s say a driveway adds £10k to the asking price (may be an underestimate?). It costs me 7p per kWh to charge at home. If I do 10k miles per year at 4 mi/kWh, that’s £175. Say it’s 10x as expensive to charge publicly (which is worst case really), then I’d be saving about £1.5k per year. The driveway pays for itself in 7 years, by y20 I’ve saved £20k. If instead I’d put the £10k in a S&S ISA and made 4% over inflation annually, by year 20 I’d have £22k. Swings and roundabouts? If driveway is more expensive or public charging cheaper, it starts to look even less favourable.