Let me just say that I've never been arrested, done any illegal drugs, or giving a citation of any kind other than a speeding ticket...
But how dumb can some of these guys be. I've never even considered any of this, but in two seconds of thought I can figure out some very basic things. If you are gonna kill a guy, dead bodies near your house and rental cars are a horrible idea. Use your own car and then friggin burn the thing to a crisp after... blame it on a runaway blunt!
If it was a crime of passion, well, chances are you either have a boat or have access to one... take that body and sink it to the bottom of a friggin lake, the ocean, etc. You can then say the guy fell overboard or something. Does it all looks suspicious as heck... uh, yeah it does... but it's not exactly LEAVING THE BODY IN YOUR BACK YARD either is it.
Seriously... lock him up for being a murderer, give him life, and then give him 5 more years for being an idiot!