[amsat-bb] "Mobile" Operation

I've heard conflicting things, so I'd like to see what the consensus is here.

Since my rig is mounted in my car, I've been told I should say "mobile" when ever I attempt a QSO. Some of the reasoning is that others will understand my "limitations" and try to work me. On occasion, this seems to have been the case.

Others have told me that I should only use "mobile" when the vehicle is actually in motion.

What say you all?

73, Kent K5KNT AMSAT #36765 ARRL