Disagreement - it’s not that the voters enjoy wate and excess (though, I agree with @Great_Antibob, that some including coal rollers do), but there are two groups with substantial overlap who are too involved in personal vehicles and against public transport.
The first group is those whose car is a HUGE part of their identity. Not just huuuuuuuge trucks, but also classic cars, sports car, antiques, and people proud of their abilities to keep junkers on the road (or even souped up). Even those whose vehicles are nothing more than giant, mobile sound systems!
It runs from fun, hobby, pride, competition, collections, and all the way to some sort of unhealthy (IMHO, YMMV) personal totem, and everything in between. Whether healthy, harmless, or not, they LOVE their cars. And there’s plenty of them (though seemingly less among the younger crowd).
The second, much more malign group, is those that will happily pay more and suffer more, as long as they feel that the “them” aren’t getting something “for free.” You know, don’t want Healthcare for all because they pay for theirs, or paid, or “earned” that Social Security/Disability. Or in this case, paid for their car(s) over the years, and worked hard for it, and why should OTHER people benefit from their tax dollars and hard work.
They’re omnipresent in the USA, each happily supporting measures that often hurt themselves because in their minds it’s a zero-sum game.
So two groups, some considerable overlap, and that’s leaving out any of the corporations that profit enormously from the private car market (manufacture, sales, service, insurance, certain injury lawyers, gas stations, and everything else that’s part of the chain).
And now, cars are a recurring source of income! If I had retained every service that came included with my car (Nav, remote access, music streaming, internet connectivity) I’d be paying over $50 a month just to drive my car.
Yeah, there’s plenty of selfish, petty, and evil forces working against good public transport in some areas, but there’s plenty of ye olde corporate money pushing the issue as well.