TL;DR: They are stupid and selfish.
People like that would rather sit in two hours of traffic and risk a parking ticket than take a subway for 30-45min. They specifically hate the very idea of public transport and they can’t even understand that public transit can be expanded without any disruption but infrastructure expansion for the personal vehicle requires insane amounts of destruction and disruption for incredibly little gain which is cancelled out by induced demand within a year.
In Montréal I know that driving is “faster”* but I still refuse to and leave my car parked. It’s just better, but I can also handle a small amount of walking outside and I’m not such a little baby that I feel immasculated by the metro system.
*It’s faster when Google Maps applies the longest wait and transfer times, and if there’s no traffic, and if you don’t account for warming up your car and then finding parking at your destination and then walking from your car to where you were trying to go.