I think this is a great idea. I live in Bristol and very rarely use my car (probably less than 1500 miles per year) and for me this would be a great solution. Also it would ease traffic congestion and get people out of their cars. I imagine that many peoples journys can easily be made using public transport. This may be an "rose tinited glasses" solution but people do need to realise that we are causing ireperable damage to this planet. I, for one, dont want to be known as a member of the generation which used up all the natural resources and killed this planet. I am not a tree hugger or anything like that but i think people need to start taking responsibility for their actions. Just because they cant see the end result doesnt mean it is not happening.
My only concern is that public transport cannot withstand an increased volume surge that this would cause so it has to be thought about very carefully.