Placentia...Not Placenta, dork... :lol
Placentia is a very nice area. As always, just be cautious about where you park and find the best location you can. Pull the coil wire, put a club on it, whatever you want to do to feel safe. Placentia is a far, far, far cry from L.A. and is a nice suburb of Orange Co. i wouldn't worry too much about your car but I would do what I can to ease my own mind no matter where I was.