I'm sorry that you don't like spiders. There is never any need to kill a spider. Just plop a glass over the top of it, then slide a piece of card underneath. Move it to a release site, then let it go. I'm surprised that this species is getting into your car, it is normally a rather secretive animal of low herbage. Although it may not be much comfort to you when you are driving, my usual response to people complaining of spiders indoors is to say that the more spiders you have in your house, the fewer flies will pester you.