[Mandarin Man]

If you use the self-driving bits - Personal CoPilot etc - it kills the MPG. Anticipates too late, brakes unnecessarily, accelerates at odd moments. Not complaining about the tech as it's limited in what it can do, but a human driver can be (for the time being) much more economical.

As and when full self-drive is an option, when the other cars on the road *also* have full self-drive and when cars can communicate with each other and the 'smart' road infrastructure, fuel economy will massively improve. To me, investing in this would generate more real world benefit than electric cars.