I know someone mentioned Atlanta's Beltline but it really deserves a second mention. If you want to know all about it, check out Beltline.org. Here is a link to the transportation system: http://beltline.org/what/transportation.shtml#investments . The system uses old ROWs from CSX and Norfolk Southern. It is 22 miles in all and will include soemthing like 1300 new acres of greenspace. It is planned to have double tracks with tons of stations connecting 45 different neighborhoods and the already existent MARTA. They have already approved a TAD to fund it and it is expected to take the 25 years and $2.5 billion. It has a lot of support even from the Mayor.
