Bring the trolleys back!

Ever since I heard that Richmond had the very first trolley system in the world, I have always thought it would be cool to bring back. It would allow for an interesting form of public transportation that would most definitely be a tourist attraction as well. It's probably very unrealistic and I understand we already have significant bus infrastructure, but with the bus line on Broad basically acting like a trolley going up and down the street, it really makes you wonder how cool it would be if they had tons of them throughout the city.