"Bob's smog test only"

I just renewed my sticker and this year I needed to get a smog test
done. Here's a pic of bob himself giving my cavvy a run for it on the
dyno. He put a probe in the tailpipe which measures particulates and
heat and drove my car through all the gears for about 5 minutes. His
place only did testing, and not any catalytic converter work, hence
the "smog test only" in the name.