>>Genuinely confused what stance you're taking here
That a car is going to expose your child to an order of magnitude more "chemicals" than a baby seat ever could - it's like asking how much sugar is in your coleslaw that you're having on the side of a large five guys milkshake. Probably some, but if you're concerned about sugar you have much bigger things to worry about.
if you are having a large milkshake, I would advise against adding more sugar to your meal. I'm not wrong, I'm giving healthy advice. To follow my advice, you simply need to ask if there is sugar in the other things you order, it's a simple, meaningful question.
That a car is going to expose your child to an order of magnitude more "chemicals" than a baby seat ever could - it's like asking how much sugar is in your coleslaw that you're having on the side of a large five guys milkshake. Probably some, but if you're concerned about sugar you have much bigger things to worry about.