I leave my M&P Shield 9mm in the center console all the time. I work in an industrial park that is frequented by local LEO, so I have no fears of theft. Our company frowns upon carry in the workplace, but doesn't mind if we do machining projects pertaining to guns.
I was at the Plymouth Walmart (OCing myself with my Kimber Custom II 1911) a week back and there were two other fellas walking around doing the same. One has a Ruger LC9 in an IWB holster and another with a Glock 26 in a SERPA. Sun's out, Guns out!