No matter how well you arrange the lighting and polish up the fenders, you just can't control everything. This was a lesson that Mercedes-Benz learned here at the 2007 New York auto show when the roof sprang a leak directly above its 2008 350 sedan, making its North American debut in front of thousands of journalists on the show's press preview days. Staff from the convention center did their best to clean up the unexpected interior downpour, but not before the car got a good dousing. Unfortunately, there is nothing in the Mercedes press release on the new 2008 C-Class that suggests it has rain-sensing wipers. Perhaps next year, Mercedes can use to avoid the exhibition-floor trouble spots.