Terra, this is why you take YOUR car to HER apartment, and leave in the morning.
ofcourse, you could decide to be a gentleman (and i use the term loosely) and do something nice before you leave. For example, make breakfast (coffee and donuts would suffice) or put a flower on your side of the bed for her to find.
If you leaving her high and dry (well, hopefully not dry ;>[img]i/expressions/face-icon-small-wink.gif[/img], you could aleast try to ease the pain a bit.