In this episode's cold open Dwight tells Michael to mark the baby (a watermelon) with a mark only he would recognize and no baby snatcher could ever replicate. Later, when Dwight takes Jan's stroller outside to test its durability (11:33), we can see a mark written in black felt pen, with the letters "MGS" (Michael Gary Scott's initials) inside an ellipse on the watermelon.
During their negotiation, Michael tells David Wallace and Charles Miner that, among other things, he wants a Chrysler Sebring as part of the Dunder Mifflin-Michael Scott Paper Company buyout. Miner declines by saying "they don't make them anymore." Having been released in 2008, Season 5 would have occurred during Chrysler's third generation of the Sebring, produced from 2007 to 2010. Miner and Wallace later agree to Micheal's terms, and Michael receives a 3rd generation Chrysler Sebring convertible. In S6:E1 , Stanley Hudson attacks Michael's Sebring with a crowbar in the Dunder Mifflin parking lot causing significant damage.