This one really should be killed off once and for all. Each of us decides whether and how to make a particular journey by balancing up his need to make it against the time, cost and inconvenience involved in the various means of making it. If I have to commute into central London from Hertfordshire, and the journey takes 50 minutes by car and 80 minutes by train, I shall travel by car - unless the cost rises enough to outweigh the convenience. If the train is quicker, I shall use that.
The task of the new crew at the Department of Transport is to shift the balance. Every measure that makes it a little quicker or more convenient or cheaper to use the train than the car will cause a few more people to switch over.