[fooblitzky]

It's not all or nothing. There are still cars, they just don't have to be the default mode of transportation. For some circumstances cars can be useful tools, e.g. emergencies or rural living.

Having cities that require a car to participate in social life is hugely inefficient in terms of energy expenditure, public spending on infrastructure (e.g in the article the yearly expenditure on bike infrastructure is 500 million euros, that's probably about the cost of replacing one bridge made for cars), and also disproportionately impacts poor people, for whom car ownership can be a real financial burden.