I can't say this happened recently, but about half way through winter I couldn't stand that my blower motor only worked on high and had pretty weak flow. While replacing the resistor I learned a mouse had decided to move in when it was sitting on the p/o's property. The fluff around the resistor was scorched. So not only was I breathing in warm mouse excretions, the truck nearly burnt down with me in it!
I'm currently in an ongoing cold war with either one, or two mice, maybe more. It hasn't gone hot yet, so far I've only deployed less than lethal munitions/means ( Concentrated Peppermint Oil on strategically placed cotton balls, sealing high value food in containers) but if they don't start showing good faith and leave my food alone, I'll be going full lethal on their furry 4th points of contact and deploying the big guns.
The main munitions for Operation Mouse Around/Find Out if they force me to escalate will include, but not be limited to; poison ( can't remember the name but it works great), Old fashioned mouse traps with peanut butter smeared cotton stuffed well into the working end of the mouse deletion device, and maybe even my neighbor's mostly outdoor old tom cat, he's been mooching free treats off me for years, it's about time he earned them. I've tried for years to get him to hold a flashlight, hand me tools, and turn the key on or off for me, nothing. He owes me.
The main downside to the poison is the enemy combatants scurrying away to expire, slowly decaying ( usually out of reach) and causing less than optimum secondary invasions, mainly flies and a really unpleasant smell. So maybe not the best option for your vehicle.
The main downside of deploying my neighbor's old Tom cat ( Fat Jack ) and clearing him hot, is he's mostly blind, old, and hasn't missed a meal or bowl of treats in a very long time; so unless he actually hunts mice just for fun, I suspect he'll just be getting work free treats as usual. And he doesn't come in the house and hang out with me anymore for some reason. Now he just waddles over, bumps into everything getting to "his" chair on the front porch where I keep his treat bowl, and yells at me until he's whiskers deep into his latest treat supply. He's a snackhead, and I reckon that makes me his supplier.
Maybe you have a furry mouse deleting mammal (cat) of your own, or someone can lend-lease you theirs, I don't know. If you do, I just hope they're more motivated to help you than Fat Jack is to assist me. I just can't get good help these days.
I realize your problem is vehicle borne while my problem is domestic , but I thought maybe I could give you some suggestions, or at least take your mind off it for a minute or two with my ramblings.