You cannot really compare the experience with public transport. With public transport you need to get to the first stop and from the last stop to your destination, and you likely need to change train/bus/whatever at least once in the middle. Working on a bus is most often impossible, so only the train part of the journey is useful. Subtract the time that you use to unpack/repack, and you are likely down to less than half of your commute being spent usefully.
Properly designed cars would be able to take you from your doorstep to your destination, have proper room for working, and noise isolation so you can use your phone. You only have to unpack/repack once per journey.