

Works already fine for cities like Paris, Berlin, Copenhagen and so on. Driving a ptivate car for transportation is for max comfort, not for need.
And also, heat waves are catastrophic emergencies which kill thousands of people. Wishes for mere comfort cannot have priority then.
Reasonable, few exceptions for really important things - I have no problem with that. But getting some bread rolls from a shop 1 kilometer away? Leave your Benz. Take the bike.

















No, like the OP The Guardian article, I was talking about larger cities which have decent public transport. They are also hotter than their surroundings which makes relief more important.
Though specifically ozone is also problem in suburbia; it is formed there during the day by photochemical smog, but decomposes way slower than in the direct city areas.