I don't think anyone is being negative, just responding with suggestions. Learning to conquer your fear doesn't mean you get over it. It just means you learn how to get through it.
You can try focusing on something else. Books on tape, etc. Use a sleep mask and recline slightly in your seat with the book on tape. Many claustrophobic people use that to get through MRIs.
If that doesn't work, you can try taking control. Try driving and see how that changes things - I find I am less nervous when I control the drive.
Change seats. Move to a backseat behind the driver or the middle of the seat. That reduces what you can see. My Mom had a fear of water and bridges. We all learned to drive in the inside lane over bridges. That way, whether she was driving or a passenger so couldn't see the drop.
Talk to your doctor about anti-anxiety meds. There are many of them out there and they can help take the edge off.
Sleep during the drive. Talk to your doctor about a sleeping pill or sedative.
