A survey of car commuters has revealed ....
The first rule of doing a survey if you want it to be unbiased is to choose your sample randomly. Doing a survey that asks people about their commuting habits and chooses to ask those who are already car commuters is, I suspect, going to end up with a report that's not worth the bandwidth given to it.
However - points made by other posters, I have to agree - there is a certain stigma attached to the bus. You have only to look at how our (business visitors) use of public transport underwent a sea change in December 2006 when the trains that our customers used were withdrawn. Prior to that point, around 45% arrived by car, 40% by train, 10% by taxi / lift, usually from a more distant station or airport, and the number who used motor cycles, walked, and used the bus only added up to less than 5%
The bus stops RIGHT OUTSIDE our new place, about every hour (picture above and we are right behind the bus!). We give publicity to the timetable, and we tell people how well it connects. Result? I would estimate 70% car, 20% taxi / lift, remaining 10% split pretty evenly between motor cycles, walking, bus, and the one remaining train that heads out at 19:50.