Spiders in My Car

I usually don't mind spiders. I appreciate their pretty little webs hanging out in crevices and corners, catching all the pesky little bugs that I dislike a lot more than spiders. However, I think there's a plot to tie me up in a big massive web.

Every few days I get in and there are threads across my dashboard in no particular fashion. A few here, a few there, a few attached to the steering wheel. Then, I see a spider crawling across the dash or, even more fun, right in my line of view on the inside of the windshield when I'm doing 65 on the Expressway at 10 pm on a rainy night. I squished two spiders last week. Yesterday, my brother was moving my car and said "Wow, you've got a busy spider". I can only guess that this is also a little brother of spiders one and two, may they rest in peace.

There is the possibility of a nest of sorts somewhere in the air ducts. Won't this be fun as the weather gets bitterly cold? They're a bit large and I'm not sure spiders live in 'nests', but whatever they're doing, they've got to go. No one else in my driveway is having this arachnid issue.

Is there anything that spiders don't like? Maybe I can sprinkle something around the dash to tell them they aren't welcome. Pest control won't do anything to a vehicle for these kinds of things. My mother suggested blasting the vents with Raid, but obviously she's trying to kill me.