Anyone Else Have One of These: GM In Transit Card

[cericd]

I posted in another thread regarding original paperwork from these old trucks but I don't want to clutter that thread up with questions about this specific item. I've looked through the forum and can't find anyone else mentioning one of these. It's called a GM In Transit Card. There are threads about SPIDs, Warranty Cards & Protect-O Plates and Build Sheets but I've never seen another Transit Card mentioned. Anyone one else have one of these, know how they were used and if they were commonly given to the original purchaser of the truck? I know it's an old computer punch card but that's about it. I'd assume they would have existed for other GM models too.