Yeah, hordes can get to be a chore, especially when most of the “hordes” running around are just one or two zombies. I’d greatly prefer “two hordes” with a hundred zombies than two hundred hordes all independently wandering around the area until they stumble across your camp, but once I’ve established yourself static can feel a little too “safe” for me.
Here’s a few ways I use:
“Stay out of town.”
Generally anything that spawns in the wilderness is content to loiter outside your vehicle without breaking anything until you’re ready to kill them.
Great places to stick around are anthills or beehives. They will swarm around your vehicle harmlessly, killing (or at least distracting) anything else that comes near.
“Craft outside your car.”
If you have a counter-attack martial art (Fencing is a good one), just craft away from your car. You should be far beyond caring about cold weather or rain given how mild weather is, and any zombies that show up will kill themselves for you.
“Redesign your car.”
Zombies generally only bash vehicle parts that get in their way, and mostly only approach you if they can see you. If you have a vehicle with no quarterpanels they’ll just clamber over the frame/cargo spaces to reach you without breaking your stuff (and then you counter them to death, as above).
Otherwise, if you have a completely opaque area that zombies can’t see into, you can sit inside it and get your craft on. It’s not perfect, but vehicle curtains are easy to make, and they double for dealing with turrets.