Castiel's Pimpmobile
From Super-wiki
Castiel steals a Lincoln Continental (Licence IA B2676) in order to reach the Bunker in 9.10 Road Trip,a lthough it runs out of gas before he gets there. Dean, Cas ad Crowley later use the car as Gadreel has stolen the Impala.
Castiel chose this car because he "like(s) it." Crowley comments "What are you,. a pimp?"