Very cool, if true

They probably can. You might be able to increase the frequency from every 5 minutes to every 4. Not sure I'd risk going much above that - you'd be looking at a wall of trams on Princes Street if anything went even slightly wrong. So that's another 1,500 spaces. Although I think that's 1,500 spaces in all directions, so only 750 extra spaces going to Edinburgh Park from the city.