In this http://disboards.com/showthread.php?t=962377 sticky (near the top of the list of threads on the Transporation board) there's a link called taxi fare estimator. You'll need the addresses of your starting and ending locations.
Don't know about the taxi, but my DD and her BF just saw ICE! in Nashville this morning and said it was fantastic!! They started out wearing their own coats but very quickly returned to the front and got the coats the show provides! -- said it took quite a while afterwards for their toes to warm up. Sounds like it's a great exhibit.