Johny Candy and Steve Martin portray an _Odd Couple_ road trip of sorts in this big-hearted family comedy from the pen of John Hughes. Once their paths have fatefully crossed, the short-tempered clean freak (Martin) just can't escape the orbit of the jovial, oafish shower curtain salesman (Candy) as they pound parallel paths to reach Chicago in time for a nice Thanksgiving meal with family. Along the way, the pair will argue, explode, split up, reconvene, make nice, hit a billion roadblocks and, as the title implies, constantly trade modes of transportation.

It's a great script, with more substance than most comedies (Hughes has always been so good at weaving real emotion in amongst the silly gags and punchlines), and the twin stars on the masthead are a wonderful pairing, perfectly capable of nailing the humor while unearthing those deeper riches. They're supported by an outstanding cast of quick-hit cameo players as the winding road bounces them all around the midwest - a cavalcade of "oh, (s)he's in this too?" - not to mention a mountain of classic quotes and situations. The two pillows, the airport tirade, the accidental convertible, the moment Martin finally figures out Candy's story; once you've seen them, they'll stick with you. A genuine, long-term holiday favorite.