I cannot speak for personal experience, other than shooting a few and knowing folks that have one, but one gun I would consider for myself as a "Truck Gun", is the High Point. A Truck gun IMO is one that will be in all kinds of environments, get beat up along the way and still function. And they have a lifetime warranty. My brother is a big CZ fan. But he will always tell me how the High Point just keeps putting the rounds down range. He is a avid outdoorsmens so the gun gets used a lot during camp and hunting trips. He tells me it will function very well when filthy.
I find the gun rather intriguing. Might just get one myself. Again Under $150.00, inexpensive mags +P rated etc. Just a suggestion.
At under $150.00 it is a gun that I would personally look into given what you have said.
There are some very nice guns available now in the $300 range. Many of these, I would prefer to keep in good shape and not use solely as a "Truck Gun".