I've got this one wacky proposal that is environmentally sound and could free up about £40 billion to pump into the railway network: end the fuel duty freeze.
It's ridiculous that in nominal terms, fuel duty is less now than it was in 2010, even though petrol road vehicles are by far the biggest polluters in Britain.
But only that, but the big "problem" of what do rural areas do who don't have good public transport is now solved in that they can have electric cars.
Put in place a policy which invests 15% in electrical charging points (with a focus on subsidys for rural charging points) and discounts for those who live and work in rural locations, invest 20% in buses, invest 15% in cycle routes (with a focus on getting children to school and everyone to train stations) and finally invest 50% in rail (with a focus on small projects which make better use of the existing network and/or create new journey opportunitys and/or electrification which reduces the most diesels and/or helps freight).
In doing so there would be the start of a change in how people travel around and can be seen as the first step towards the goal of being carbon neutral by 2050.
To help with the launch the government could announce that they are investing an extra amount of money to kick-start projects and that increase, back to where it should be, would be phased in over a 5 year period starting in 6 months time, and then increasing every 3 months.
In doing so it would mean that a lot of people would be able to plan for it (i.e. they would have chance to replace their vehicles within the normal replacement cycle) whilst also allowing for improvement schemes to be started off