And what is a walk? Gödel lives an hour north and Einstein needs to pick up the kids from school. Traffic is pretty bad, no time to talk.
Cars are a problem but forcefully excising them is both a political nonstarter and just makes life harder for everyone. People will choose to not own cars once it's feasible to do so.
There’s more to it than this. Check out the Not Just Bikes YouTube channel for the whole story