A
-- yeah, I guess I've never really, uh, thought about the fact, like in California they, they have a lot of smog problems.
B
Uh-huh.
A
And it's real hilly there.
B
Yeah.
A
So that is probably something that plays a big factor. I think probably just, uh, a lot of factories, um, you know, they have the smoke stacks, I guess you call them --
B
Uh-huh.