Why sacrifice so much in terms of motoring for fuel consumption? Yes sure my M3 might use 12-13 l/100km, it sounds great, its raw and exciting and makes you feel alive and the driving experience is just epic. I will never give this up for R500 per month less fuel.
I still believe Hydrogen cars is the way to go, hybrid still uses petrol or diesel, yes its less but the need is still there and the only way to preserve oil is to stop using it.