This week on Car Talk, Eric in Arizona is finding 100 dollar bills under the seats in his recently purchased '06 Lexus. Is it a unique rebate program? Evidence of nefarious doings by the previous owner? Meanwhile, Lori in New York City went to a TV show taping and left as the reluctant owner of a brand new GMC Denali. Is there a hassle-free way she can get rid of it, aside from handing the keys to Tom and Ray? Also, Ellie survived Chicago's Lake Shore Drive blizzard shutdown, but her Ford Escape may not have been so lucky; Robin in Arkansas learned the hard way that her dog and her husband's Chevy are not a good match; and are duct tape and a drill the best options to fix a leaky Civic? All this, and lots more, this week on Car Talk.