Having worked law enforcement for 4 years in the "Great" city of Detroit, there is pretty much one thing I see or hear from victims that rings true the most.
LACK OF SITUATIONAL AWARENESS.
The first question I would ask would be, " Were you alone in the parking lot?"
And pretty much 99.99999% of the time the victim would state, " I don't know I was looking at the ground, the sky, my car/bike, in my purse, pretty much any where else but my situation around me."
Please people if there is one piece of self saving advice I can give is, keep your head up, on a swivel, be alert, and know who belongs in the area and who doesn't. If you see anything out of place or it doesn't feel right, trust your instinct. Fall back to a place of safety and watch from a distance.
Is that guy with the black hoodie with his hood up lurking the parking lot for someone, or is he just the nightly janitor that cleans your place of work in the evening taking a break?
Is that darkly tinted car parked next to yours occupied or believed to be occupied? Are those stickers on the side of car gang related?
If you still feel un-sure, ask a co-worker, friend, boss, who ever to walk you out to your car/bike.
We've all seen the Discovery Channel, about how the great predators of the world 99% of the time go after the weak, the sick, and the dumbest one that hasn't a clue of whats going on around them. Same rings true to criminals, easy prey is just that EASY PREY.