I arrived after 10 PM last week -- 5 vehicles total:
3 mammoth SUVs (I won't take these under any circumstance)
1 Chevy Aveo
1 Saturn ION.
I took the Saturn because it had an XM antenna (but the radio wasn't active).
The next day, National e-mailed me --- they wanted the license # and VIN (that's never happened to me before!).
BTW -- Emerald Aisle & Exec are on the 2nd floor of the garage, away from the other rental areas.