every time i am in the car i end up getting queasy and having hot flashes so i need to open the window and fall asleep that is how it starts when i am not driving recently it has progressed to where if i am driving no matter how much sleep i get i become uncontrollably drowsy and it is different from it is getting late i am getting tired drowsy i have no clue what is going on all i know is that it doesn't bother me at night only during mid afternoon to early evening any ideas please let me know and thank you.