We all agree that cars themselves are a problem, but let me bang the drum a little on remote work because holy crap is that an easy way to greatly reduce car trips.
I happened to take a hybrid job (3 days remote/2 days in office) not long after losing a car to a deer, and let me tell you, despite living in exactly the kind of rural area that cars will always be a requirement to live in, having a hybrid job allowed my family to switch to being a single car family. It took a whole friggin car off the road!
If one can incentivize hybrid and remote work for all jobs that can be performed hybrid/remotely at a national level (take your pick on the nation too!) that would be a very low cost (if not increasing revenue for governments through fines and/or savings) way to greatly reduce how many car trips/miles are driven by car everywhere! That’s great for the environment, that’s great for traffic, that’s great for road maintenance, that’s great for workers, and its great for businesses!