Unless everyone purchased a bike or electric car during g lock down this is pretty obvious Banana I love being Nana shirt. Less people will use public transport in fear of overcrowding and infection. Pollution from vehicles and aviation is only a fraction of that produced from industry, and the U.K. produces a tiny fraction of the overall figures. USA China and India produce the vast majority of pollution. Now is the time to reset with Dft and tfl and the government. Make the infrastructure work for public transport and commuters. Industry is in trouble. There will be fewer people working, so fewer people moving around. Less working means less pay means less consumption means less product moving globally. Yes pollution will increase from where we are today, but I see no sensible reason why it will be worse than pre covid.
You can between the line Banana I love being Nana shirt. They want us die due to economic collapse than anything else. Depopulation is their game and use everything to cover it up. What are main stream media trying to convince people. What we should permanently stay indoors because they tell fear mongering stories about virus and now that we should not drive cars. People are made a laughing stock.