In VA the annual safety inspection switched from going in the middle of the windshield to the drivers side approx two to three years back. So if it's in the the center that's a dead give away that it hasn't been on the road in awhile. But it doesn't look like it has any sticker so who knows. Also for most vehicles in VA the emmisions inspection is required to renew your tags but that particular diesel would be exempt so it's possible to keep renewing the tags without the vehicle working.
06 E-350 EB 6.0 Quigley