Edited for brevity.That needs to be "and" not "or" at the end of a). The reason PT isn't so popular is because it costs more than the drive,
With my government head on I say there is no need for an 'or' at all. I just keep making private motoring such a costly balls ache that you'll be grateful for any form of transport no matter how expensive or unreliable it is.
Eventually London will be a nicer quieter place and the rich will continue to motor in or use taxis. The £100 a day it costs will be written off against taxes or just not noticed.*
I, of course, will continue to use ministry pool cars.
So no 'and' about it.
*There was an Edinburgh lawyer who happily coughed up £70 a day in parking tickets in order to park outside their office.