When it rains, even if it's the next day and hasn't rained that specific day, you roll down the windows back up and it has that streak of water. It happens for all 4 windows and I usually don't really notice this with other cars besides this one. It's weird that a brand new car would have such problem when old cars tend not to. It's just a tad annoying knowing that it's a beautiful day outside and sunny and hot, and you roll down the windows. And you're knowing that rolling them back up, there's rain water from the day before.