Hi Joe, You cannot disinvent the car. Not many people can afford new cars, and that is a fact. So they will buy second hand ones. Sixty years ago the majority of working people lived close to the factories, coal mines, and docks in which they worked, and even then there was much better public transport to get people to their place of work. Since that time cars have become cheaper, and working men and women have to travel much further to their place of work, and with less public transport the car is a necessary item. I used to work in a steelworks in a small Lancashire town and out of the workforce only 5 had cars, the MD, the works manager, the Stores manager, the Sales Manager and the Chargehand electrician. Everyone else came on their bikes, the 'bus or walked it. They cannot disinvent the car, and the majority of people in this country cannot afford new cars. The diesel engine, properly cared for has minimal emissions, about half that of the equivalent petrol car, and with twice the mpg of a petrol even less. You will see diesel cars on our roads for a long time in the future. Regards, Peter.