In a neglected corner beyond Nairobi's frantic bus terminal lies the entrance to the city's railway station. It barely warrants a second glance from the thousands of commuters making their way on to the hundreds of matatu minibuses that keep Kenya's capital moving. The station is more useful for time travelling than getting anywhere in a hurry. Most of the destinations have fallen off its battered departure boards, no one sits on the ripped upholstery in the first-class waiting room, and only a tiny Somali girl is brave enough to use the blocked bathrooms behind it. Platform One has the feel of a museum gone to seed, which is what it has taken a step closer to becoming this month with the unveiling of plans for a high-speed rail link between Mombasa and the capital.