Fine but you need roughly 4MJ of energy to lift a 1 tonne car through 400m (1300'). Currently this 4 mile/400m section takes about 10mins so you are looking at 24kWh of motor just to do the vertical lift of the car let alone deal with the accelaration after sharp 2nd gear bends... And of course that capacity and more in the battery at the bottom to get you to the top.
Having had the brakes fade to more or less nothing going down this hill in my previous car I don't use the brakes much at all now... They took quite a while to come back, a good 3 miles and they where ventilated discs at the front as well.