Parking Garage Of The Future
Spunk writes "Like something out of the Jetsons, this NYTimes article [no-reg link] describes a parking garage that automatically stores cars in a 3-dimensional grid, and retrieves them when you return. Europe and Asia have several already."
Would be to ban large vehicles from the city. Only allow one or two-person mini-vehicles in, while every SUV has to park on the border and take public transportation. It wouldn't be a politically popular move, but it would be space and fuel efficient.