A friend of mine has a house in bulgaria.  I dream of the day when I can whoosh across europe in a train to visit him.

I dream of all those railway sleepers being covered in photovoltaic cells/tiles.  Miles and miles of track sucking up the sun and passing it to the trains or the grid.  An engineer told me this was technically impossible; and yet I dream...

(I also dream of windmills in the central reservations of motorways.)

(I also dream of naked erotic...er...cough...)

(Just wanted to show I don't only dream of renewable energy/transport)

Don't fight forces, use them R. Buckminster Fuller.