My DD did this. From she was born right up until she went in the forward facing seat at 10.5 months.
It was an absolute nightmare. The screaming was unbearable even on short journeys.
It was as if she was being murdered - honestly. And the second I would pull the car over and jump out and open the rear door, she would stop and smile at me.
She just hated not being able to see what was happening.
She enjoyed observing from an early age and started crying at lying down in the carrycot stroller attachment from about 8 weeks. I put up with it for another 4 weeks and then put the seat attachment on the stroller (she had superb neck control and she was a large baby so too long for the carry cot at 3 months). She loved it.
And now in the forward facing seat, she sits and looks out at passing traffic, landscapes and pedestrians. Talks to me, sings (tunelessly) along to music or even falls asleep. Not a tear to be had.
I have been wondering whether the low rear facing seats can cause babies to feel car sick. If I'm not looking out of the window in the car then I get terribly car sick (and will need to vomit). So perhaps some babies feel that too?
Also the maxi cosi car seat we had was rubbish for a large baby. She was sort of crunched up in it and it seemed that their backs are almost rounded when lying in that type of seat. Probably really uncomfortable.
I think the only answer is to minimise car journeys until you LO is large/old enough for the forward facing seat.
You have my sympathy - masses of it! Its hideous to drive with a baby crying its little heart out and if you avoid going somewhere because of it, you then feel trapped. Argh.