Are you crazy? O_O nearly everyone drives a car to work, school... etc.
If cars were banned, yes there would be a loss of CO2 but also a loss in sales, jobs, and so forth. Not something we need right now but who knows where we will be in 40 years but I find this a little bogus... A ban on all cars? Maybe they plan to roll out thousands of electric cars perhaps but the ban seems a step too far. The underground system is bad enough with car-less people, It would be hell if no one had a car =/ It would take millions, maybe even billions to expand the system to accommodate for like what? 7.5 million people and growing...
Or maybe we will see millions of people hop on bikes and ride through the mazes of london streets for x amount of miles day in day out