How do you sell a car long distance?

Hi,

Moving from town far away and thinking of leaving my old car in
storage. Might be coming back, or might not depending on whether I get
another job here. If I don't come back is there any way to sell an old
civic that's worth about 2k without my being present in the city?
Advertising it online is no-big deal, and I don't think giving the
storage guys instructions to let someone take it after they've paid me
for the car would be a bgi deal either, but how would I arrange test
drives? If I let people just test drive it formt he storage place,
they could easily just leave with it since I won't be there.