UK High Speed Rail
This has been long overdue. Almost every single main line or commuter route train I've been on in the UK was full or overcrowded. Unfortunately the government just left the market to it after the privatisation. However, that completely failed to produce any improvements to the rail network, in fact it fell into disrepair and the infrastructure has been partially returned to state ownership.
I would love to get regional HSR in the states. Don't know if it's economically feasible (yet).
Not hacker news.