100% agreed. Just absolute truth. I am floored that Rocksteady thought the car was a good addition to the game in this manner. It should have been like the horse in Witcher 3 - fast transit if you want it, some races, some side missions - not shoehorned into everything, awkwardly used for puzzle solving and constant breaking of gameplay flow.
I haven't played AK yet, but I ended up watching like 5+ hours of Manvsgame playing it. The thing that stuck out more than anything else to me was how much time was spent in the tank, shooting stuff. It reminded me of a PS2 era mini game.
The rest of the game looked cool, the combat looked as sharp as ever, but that car/tank stuff is massive filler.