i've hitched between asheville and greenville, s.c many times, down hwy 26 to 25, and always had easy rides, so maybe you could go down that way, 26 turns into 74 east to charlotte ( look at google maps). also, theres a bus, i forget which one, just ask at the window in the bus station, that will take you all the way out to the holiday inn in fletcher, by the airport, and right across from the hotel is a nice on ramp with a guardrail to sit on and lots of traffic both ways. get your friend to fly a money sign while you fly a ride sign, cause theres good spots for both there. you definitely want to stay off the interstate untill you get outta asheville cause the cops will fuck with you, so take that bus. you'll be fine on the on ramp