[Blueflag]

This is on 376 near Clinton, Pa.

A fully involved tractor trailer would be a good smoke-maker.

http://www.wtae.com/news/tractortrailer-engulfed-in-flames-on-parkway-west/42224664

[Pietro]

That must be it. We're close to the Clinton exit but it looks like its further away.

Thanks for the info.