If the lot is huge and empty enough in the outer regions, why not just park diagonally across 2 parking spots and have a nice walk to the store? No one should GAF if there are hundreds of empty spots around you. If you simply park 4 or 5 spaces away from the edge of the filled part of the lot and expect no one to park next to you, you're going to lose that bet if the Walmart gets just marginally busier while you're inside.
People are awful parkers, it's just a fact of life. I drive a 2006 VW Jetta Tdi w 140k miles on it as a DD, love the car. 5-speed manual, black/black leather w every option, surprisingly sporty and very economical. Still, I've had new car fever lately because I want a few features it doesn't have like bluetooth, keyless go, iPod interface, etc...
I can afford the new or slightly used car I want but one of the things stopping me is the fact that the Jetta is already dinged and you just don't have to think about parking it in crowded spaces at the Post Office or Home Depot, etc. If someone opens a door into it, they are a rude fk but really, who cares? It makes for such an enjoyable city car. No stress. If someone dings your nice car, it ruins your day or worse, plus you have to hunt for safe parking spaces and then sweat it while you're inside, etc..
