I had moisture on my windshield this morning...wasn't too bad....when it got real cold my daughter's old Le Baron convertible used to have the speedo freeze up and it wouldn't start working until the car was driven for about 10 minutes. Occasionally I had it on the inside when I had a Le Baron convert also...it's not too bothersome and doesn't happen all the time. And yes....because the roof isn't padded sometimes there's lots of road noise and noise from passing trucks but it doesn't bother me.