I'll be in Greenville for a convention in November and am going to extend the trip and visit friends in Charleston after. Besides getting a one way car rental (I'll be flying into Greenville, and out of Charleston) is there a way to get between Greenville and Charleston? I looked at taking the train but it's a 20 hour train ride! I've posted this in the Charleston forum but thought I would see if anyone on the Greenville site had any better ideas. Thanks!