I just Purchased a 2011 Leaf last week, We've had about 5 inches of rain since then, and i noticed that my back floor is soaked. Took it to the dealership today to check it out. They're only answer for me was that I either drove it in High water(which I did not) or left my window down. When I asked if it was possible for water to get in any other way they basically laughed me out of the building. Has anyone ever heard of the backseat being soaked for no reason? I read that sometimes the driver side can become wet from the AC but we've been pretty cool here and both front floor carpets are pretty dry.