I asked my dad earlier today what I should do (besides vacuum) about ants in my car. (Sidenote: I do not leave food in my car. So that is not why they are there. I blame it on the rain. Yeah. Yeah.)
This was his response to my email:
"Ask them where they need to go and take them or drive around until they need to go to the bathroom. Stop at a quick mart and when they get out to go, shut the door and drive off leaving them behind. If that doesn’t work get some ant bait at HD or Wal-mart."