How can I get rid of them? Everyday I see webs in my car, I wipe it clean...can't find the spiders. Next day, new webs.

 

You have to drive fast and blow the cob webs out of it.

 

Using a flamethrower can be effective.......yet very costly.

 

This. You have to get it out if the garage and drive it!

 

From a bug site:

"Carbon dioxide fumigation

Another option is carbon dioxide. Carbon dioxide gas (the stuff the makes cola fizzy and contributes to global warming) is lethal to most insects. Carbon dioxide fumigation is routinely used, for example, to disinfest horticultural plants like fresh flowers prior to shipment. I'm not really sure how well the following might work because as far as I know it has not been tested. But, carbon dioxide is easy to get in the form of dry ice. Many ice cream stores have dry ice for sale that they use to keep ice cream frozen. It is cheap and easy to transport in an ordinary cooler. If one placed a plastic tarp over the car with the edges weighted down and put a block of dry ice (a pound or two would be a good starting point) inside the car you might be able to safely fumigate the interior in a few hours as the dry ice "melted" to carbon dioxide gas. Be sure to completely air out the interior before you get in to driving away!"

 

Sounds like you have a nest under the seat!

 

Better find that nest before they get too big.

 

I just clinch my fist and do a punch when I see a spider, KO!