My truck gun (actually, a Jeep gun) is a cased Ruger Blackhawk under the driver's seat. It's loaded with 300 grn. hardcast flatpoints. In the glovebox is a an LCP. On my belt is an SR9c. I'm like that about knives too. Always a folder and a multitool in my pocket, 2 in the Jeep. I have a sippered duffel behind the rear seat with everything else, like first aid, water, ammo, freeze dried meals, and stuff like that.
My wife says I'm insecure. I reckon she's right, but lots of times I'm not at home and need something, and yep, I have it in the Jeep. If anyone ever breaks into my vehicle, I'm doomed until I can get to Gander Mountain.