It might be that bubs just doesnt like not seeing anyone, or the motion of the car??? Or sun in bubs eyes???

I know you can get these mirror things that you attach somewhere and bubs can see the driver and the driver can see bubs.. but im not sure where to look for one- i have just heard of them. Maybe a wondow shield cover for the window incase its the sun or just too much for bubs to see stuff flying past the window.

Both my kids have had moments of hating the car, but generally they have been ok. Usually its just that they are over being in the car, or they are hungry or its the sun. At the moment DD is really hating the car coz she is at the walking exploring age and she hates been constricted in the car for even a ten minute drive. Distraction works a bit, but once she starts the tanti, it isnt over til she is out of the car!! I hope for your friend that something changes for her and bubs so she can happily go out and about!!!