In Job Fair (2008) it's mentioned that internships at Dunder Mifflin offer no college credit. However, the interns in this episode are given letters to give to the dean to get credit for their internship.
In Broke (2009), when Michael is negotiating his return and the buyout of his company, he includes a reserved parking spot and a Sebring in his list of demands. Charles Miner responds that they no longer make them, however at the end of 'Gossip', Stanley is trashing a Sebring (presumably Michael's) in a reserved parking spot.
Not a goof: there is no reason Michael couldn't have bought a used Sebring, a years-old model from back when they did make them.
Not a goof: there is no reason Michael couldn't have bought a used Sebring, a years-old model from back when they did make them.