Also depends if you want a striker fired or hammer fired semi auto. Pros and cons to each, and other differences such as when reholstering a loaded striker fired pistol, versus reholstering a hammer fired one (when doing so, you can put your thumb on the hammer to ensure the trigger isnt catching on anything). Glocks are striker fired.
Some striker fired pistols have a manual safety, like certain variants of the the Sig P365 and S&W M&P Shield.
I’ve had both, along with Glocks and several other makes. For a subcompact pistol, the S&W Shield is solid. I have one in .45 (7 rounds, with manual safety) but not as easy to find a holster for it, as for a 9mm Shield. And in at least a few anecdotal youtube videos by an ex military guy who goes by the name Garand Thumb, the M&P did very well in mud and ice/extreme cold tests.
But a 7 shot, stainless 357 mag revolver would also be a great truck gun. And if you had to, putting a trigger guard lock on it would make it more secure than on a plastic semi auto (where if someone really wanted to, they could quickly cut the plastic trigger guard to remove the lock).