First, we love our Smart, but, we have just discovered the dumbest thing we have ever seen on a car. We have just finished a 1700 mile cross country trip from New Mexico to Kentucky. On the interstate during a rain storm I wanted to use the rear window wiper to clear it, but could not figure out how to turn it on. Looked in the owners manual and the rear wiper will only work when the car is in reverse!!!! What idiot designed this??? This is the dumbest thing I have ever seen on any car. Going down the road in a rainstorm the water blows up onto the rear window but you can not use the wiper going forward. STUPID Anyone know any way to change this??