PS - what are they doing in the last picture? Looks like the car is taking a dive in some milk
I believe that's the zinc phosphate etch, which helps with corrosion protection and enhances paint adhesion. They showed us something like seven steps in their paint process during the plant tour. Having worked in manufacturing plants my entire professional life, including dealing with many paint processes, I must say that theirs was impressive. It's all about the prep, as painting is just a small part of the process.
'11 BMW 335i (Alpine White) M-Sport, Premium, Heated Seats, HK, Ipod adaptor, dealer-installed PPK - Euro Delivery 5/11/2011
'05 Lotus Elise (Arctic Silver) Sport, HT, Stage II, Odyssey PC925
'87 Nissan Pickup (Burgandy) King Cab, 80k miles
'13 Audi A3 TDI (Ibis White) Cold Weather Package, Bluetooth - Wife's car - Delivery 9/12