Found this from November of 2004:
From: “Nathan McCarty” <firstname.lastname@example.org> <email@example.com>
To: “‘Bryan'” <firstname.lastname@example.org>
Subject: RE: When you were offline (via LivePerson)
Unfortunately there are not any projectors that can do that.
From: Bryan [mailto:email@example.com]
Subject: When you were offline (via LivePerson) I am interested in running a projector in my car off the battery. I have an inverter rated at 400W. Do you carry any projectors that would be capable of this output?