I suggest getting a car seat cover that the baby sits on top of, and has a cover to go over the baby. It's something that you can definitely buy second hand, but it's really helpful. I got a pink one like this yesterday for $2.
https://www.target.com/p/JJ-Cole-Original-Bundle-Me-0-12-Months-Apple/-/A-12979078
I've bought this snow suit not too padded but really snug
https://www.boots.com/en/Mini-Club-Newborn-Girls-Layette-Fleece-Pramsuit_1215970/
I've bought this snow suit not too padded but really snug
https://www.boots.com/en/Mini-Club-Newborn-Girls-Layette-Fleece-Pramsuit_1215970/
Yes those are the ones I ment, its gorgeous xx
I would use a long sleeved vest and something over the top like a cardigan and a blanket.
It depends how long your journey is- if it's long then a snowsuit is very hot in the car and it's v easy to overheat in a snowsuit, but on a shorter journey the car is v cold and snowsuit is fine- so depends really!!
Blankets are good because in the car they are easy to take off and on depending on variable temp in a car!! I find snowsuits are best for prams and slings where youre outdoors the whole time, but that's just me!!
Where the outfit you have brought him and maybe invest in a smaller jacket which he can fit into in the car seat then blankets you can wrap over him
x