S.C. does not honor conceal carry permits from Al.
Of course, as long as it is concealed. With a valid carry permit, you could keep it in a briefcase, a purse, fanny pack or pocket. You could also keep it under the seat or virtually anywhere as long as it is out of sight. Without a valid carry permit it needs to be in a closed compartment such as the glove compartment or center console. Remember to notify a LEO that you are carrying concealed as soon as he asked you for ID. Drive safe.