This week, it’s a claustrophobic’s nightmare! Annie’s boyfriend wants her to crawl into her Mercedes’s trunk so he can see where it’s leaking. Can Click and Clack help her escape? Find out why a big guy and a little car add up to an extra-large maintenance bill. Plus, a real Saab story: Christine and her five-speed are old pals, but a bum knee might mean the end of a beautiful friendship. Also, we check out a few “full disclosure” newspaper ads for dogs whose owners could use some marketing tips. That and more in this week’s hour of Car Talk.