I think there are really two vans: the un-stickered one with the stripe and the all-white one with the FakeChanWrap(tm). The second one, the surplus FBI van, got painted and stickered, maybe driven ONCE to get it to the Autozone parking lot.
>>3625150 (lb)
I doubt all those "OMG it's that van we saw" pictures were really taken by the NPCs claiming to have taken them. My hypothesis is that they were taken by the frame-up van decoration team and digitally distributed to Dem. volunteers who were willing to perjure themselves for the cause.