It was a CO2 and smoke detector, guess the truck's running pretty good? You know Wade (Tom Fulp's brother) has reportedly become a metal detecting fan... guess it's like birdwatching, golfing and stuff...
The second to last panel could've used a bit more screechy looking notes, and/or !@*^%%# to sink the message home.
VicariousE
Reminds me of the smoke detector I got... tried it out on the truck's exhaust pipe, didn't make a peep |:
ChazDude
Lol, that's weird...