Just to add a bit to what Rico567 is saying.
I registered my 2014 for a buy-back through the VWGoA portal, not at a dealership.
My documentation was uploaded to the VWGoA portal for review, not a dealership.
My confirmation email that all my documentation was correct came back from the VWGoA portal, not a dealership.
The final offer came from VWGoA, not a dealership. The accepted buy-back amount was a straight offer from VWGoA, no sales incentives from the dealership added on.
At the time, the buy-back specialist at the dealership was a contract employee to VWGoA, who traveled to different dealerships around IL, not a dealership employee. We know that's all changed now.
I sold my 2014 back to VWGoA, not the dealership. The dealership was just a location for the transaction to take place, hold the car until VWGoA could pick it up, and transport it to one of the 37 holding sites. After the buy-back specialist inspected the car and took several photos, including the odometer, he placed this sticker on the car. The sticker clearly marks the car as property of VWGoA, not the dealership, and not for sale.
The buy-back specialist was not allowed to use any of the dealership's resources. The guy had to bring his own laptop and printer. He told me wasn't even allowed to use the dealerships WIFI. I was waiting for him to tell me the dealership was going to charge him for using it's power and water when flushing the toilet.
So what's the point of all this? The dealership never had possession of the car. Without possession of the car, the dealership can't offer a trade in allowance on another car. No trade in, no reduction in sales tax on another sale. All the dealership had was VWGoA's property sitting on its lot until it could be picked up.
All in all, the buy back went smooth. The process protocols clearly had many levels of demarcation to separate VWGoA from the dealership.
I took the money and have moved on. It worked in my favor. VWGoA paid me $4k more for my 2014 than what I paid for my 2015.