1. Rail travel is now more popular than it's ever been since World War II. The vast majority of passengers aren't the 'rich and well off'. They're simply people who are seeking a fast, efficient and eco-friendly means of travel. The rail system is in need of a serious overhaul in order to meet those needs.
2. High speed rail travel isn't necessarily particularly expensive. London to Paris return costs £69 using the cheapest fares. Single fares, on existing tracks, from York to London start at £13.50.
3. Rail travel is far less damaging to the environment than travelling by car (or by plane). The duty on vehicle fuel should be doubled (taking the price of a litre of fuel to over £2), with an exemption from paying duty for public transport operators, in order to fund much-needed rail improvements.
Chris