The Mayor has floated the idea of charging for road use, including potentially charging per weight, ie for the damage caused by the vehicle, so contributing to the cost of repairs - some info at https://www.bbc.co.uk/news/uk-england-london-60030127 and https://www.theguardian.com/uk-news/2022/jan/18/sadiq-khan-proposes-journey-charge-for-motorists-in-london. It could prompt a reduction in use - see the TED talk about the impact of congestion charging in Stockholm https://www.ted.com/talks/jonas_eliasson_how_to_solve_traffic_jams. Drivers do not perceive that they are being influenced by the charge, but they drive less. On the other hand, there is always the law of unintended consequences. In the case of plastic shopping bags there was a fall in the use of disposable bags, but a surge in purchase of 'bags for life' which contain more plastic.
I wonder what the black swans involved here might be?
VW and Mercedes introduce hovercraft technology to make their cars lighter during statutory tests!
