In my regional UK city, most of my trips look something like: X minutes by car/taxi (although driving you need to park, and taxi you need to wait), 1.5-2X to cycle (direct but need to contend with hills, rain and much increased risk), and 2-4X to use public transport (total time, door-to-door, need to rush to get the thing and wait outdoors for 5-10 minutes) (2X being the ideal case of home to centre, 4X for point-to-point two places outside the centre).

It's not even remotely competitive, and for that reason private cars are used for some ridiculously high proportion of journeys (90% of passenger miles overall).

In the UK only 17% of commuters use public transport, and 5% use "other" including bicycle/motorcycle/taxi.