You can live in Downtown Charleston without a car, but whether you should give yours up depends entirely on which block you land on and how far off the Peninsula your life pulls you. Most of my buyers keep one car and quietly retire the second. That is the honest middle ground, and it is worth understanding before you buy.
I get this question in almost every relocation call. Someone moving from a bigger city wants to know if they can go car-free. Someone moving from the suburbs cannot picture life without two cars in a driveway. The real answer sits between those two pictures, and it changes depending on whether you are in South of Broad, Harleston Village, Ansonborough, Radcliffeborough...