A nosy couple spies on their neighbors with binoculars when they pull into the driveway in a pretty nice Buick Enclave. They're happy for them, and not at all jealous. Not at all. Now during the Buick NCAA March Madness Event, you can get nearly $8,356 cash back on a 2015 Buick Enclave. Offer ends Tuesday March 31, 2015.