I have the basic box like Mike and Bob, and when using it, carry it like Bob does. I used it a lot in CA, but now mostly use it for road trips.
Locally, If I'm going into the Doctor's office or post office or something, I'll just stick the gun in the center console and lock the car. YMMV depending on crime in your area for just using the center console. Honestly, I ignore the "no guns" stuff in a lot of places. I carry my gun into the local post office, but wouldn't do it in one of the city post offices.