Cars fulfill a very self-indulgent narrative. ‘I get to decide where and when I travel’, makes people feel “free” snd “important” even when millions of them are silently coming to the same decisions-- like going downtown at 09:00 on weekdsys-- that allow huge efficiency plays.
Notice how many ads feature fantasies of open roads and trips to faraway attractions, not the real world of “I need to sit in rush hour traffic from 6:30 on to get to the Work Factory”
Maybe public transit needs to focus its message on the freedom from drudgery it offers-- you don’t have to be staring at the driver in front of you, scanning the traffic reports