My Tesla was £35k cheaper than my Morgan and much cheaper than my Range Rover - so it depends how you measure these things. I've saved on corporation tax, road tax, congestion charge, servicing and fuel duty - it will have paid for itself in 3 years, quite easily (in comparison).
As always, it depends on individual use cases. I do a 160 mile commute in and out of London which costs roughly £7 in volts Vs roughly £59 in petrol in the Range Rover (or Morgan). Fortunately I charge at home 99.9% of the time - if I was stuck with public chargers, the numbers wouldn't look as good.
