Or you could design cities to have green in the first place by designing for better modes of transport than cars. Cars take up a huge amount of space both while traveling and while not in use, instead of spending all that money and space on cars you can have public transit, cycling infrastructure, walking infrastructure, and greener cities.
Or you could design cities to have green in the first place by designing for better modes of transport than cars.
But there are no better modes of transport than cars. They are literally the most used vehicles on earth. This means they have topped every other form so far.
The natural next step in the cars evolution is self driving electric vehicles. So cars will be used by multiple people, so there are less cars overall and those cars could be stored in large strategically well placed big parking lot buildings.
Cars take up a huge amount of space both while traveling and while not in use, instead of spending all that money and space on cars you can have public transit, cycling infrastructure, walking infrastructure, and greener cities.
I agree on cycling infrastructure and other forms of public transport. The more options people get, the better.
But cars are irreplaceable. Car infrastructure is the most flexible we have. Ambulances, police, craftsmen, busses, taxis, you can easily transform them into pedestrian territory, or turn them into bike lanes.
And as I claimed before, if the next 100 years bring us new technologies and self driving cars revolutionise public transport, then this infrastructure offers the option to increase green surfaces in cities.