Gunmetal grey was a colour for a British car back in the '60's, the Humber Super Snipe. I had two of them and loved them.
https://www.justcars.com.au/cars-for-sale/1962-humber-super-snipe-4d-sedan/JCW5049258#&gid=1&pid=2
I love the look of the OP's truck.
The Maverick computer said that the airbags deployed. However, they didn't. Therefore they SHOULD have deployed but failed to do the one job that they were built for. This is a MAJOR failure!!!
It happened to me once. I was driving across the Nullabor Plain in Australia on cruse control when I came up to a car driving much slower. I put on the brake and the pedal went straight down to the floor. No brakes. As the brake light switch was operated by a pressure switch in the brake lines...
You could drain a 12volt battery very quickly with a 110 volt drain. Run the engine when you use it or your engine may not run when you try to start it.