I was thinking then, of some game the three of you might engage in, to sort of distract you.
My kids and I used to look for specific license plates...Like find one from xx State, then choose another state.
Someone else here suggested adding up the numbers on license plates...
Another thing I used to do with my kids..this is kind of cool...I used to start a story...like "There were these two little girls and their names were....
then my child would take turns with me filling in the blanks and taking the story in all kinds of direction..
it would go on for a long time...
don't know if your daughters are old enough for this kind of thing, but if they are, it's really alot of fun
When we'd get stuck we'd start the story over using other subjects, etc...you get the idea?
Eating small snacks...having a ball point pen to click off and on....
Soothing music, drinking water, breathing....and telling yourself that deep down, you won't pass out.....
Refuse to believe those negative thoughts and try replacing them with positive ones...such as
"I know I'm a good driver"
Have you ever passed out before?
If not, then your real battle is realizing that even though you may feel like that, your past has proven the opposite to be true and REAL!
I hope that others will offer other suggestions...
Good luck...do your best to get through it....
ONCE you do, reward yourself!! ;)