Tried that but could never get to the bugger... Once I pulled the rear bench out, BAM there she was... by the way doktor_x... you seem to know WAY TO MUCH about a spiders breathing ability!
Weird. That method has done wonders for me in the past. They grew 'em big in the Sacramento area when I was there and I developed a habit of keeping a dedicated can of WD-40 around. The black widows seemed to have an affinity for "that old car smell". If a car sat for more than two days, it was a very good idea to look things over before shoving hands in there.
Anatomical knowledge of the target vastly increases efficiency as a freelance merchant of (in this case - invertebrate) death. I hate spiders.