[Temporary]

Ok, first thing - I know nothing about mustangs.

There's a nice black mustang around town, either a 2000 or 2001, that looks like any ordinary stock 'tang except for one thing: It looks like there's an exhaust pipe (or something) in front of the driver's side rear tire. It's rectangular at the opening. I'm just wondering - anyone know what that is? Never seen it before.

Thanks for any info,
- Newbie