I just read another article on them over the weekend that clearly stated that there is currently no product that works to get rid of them; they are working on developing something. When sprayed with insecticide, they sometimes come back to life after up to a week. Vacuuming them up or spraying them with a solution of soapy water is what is recommended, and sealing up your house openings. I don't know what to do about a car though, that is awful. The few we have in our house bother me enough (we probably kill 5-10 a week).
Here's one article I found, but it wasn't the same one I read - but lots of good info there.
http://www.carrollcountytimes.com/n...cle_d8fcad32-478f-11e0-b9c9-001cc4c002e0.html