No Tagging program can set a “file order” for a FAT32 or NTFS file system on that USB stick.
It is one of the frustrations of many media players - especially in cars. They are painfully
stupid basic as to how they support file tags. (Especially FLAC) It is annoying when you spend many thousands on an expensive car - and then find it acts as a total idiot with music files.
I’ve seen some bad media players work on the order you copy the files onto the stick!
What make is this car or the specific audio gear in the car?
You will just have to experiment. As @jesus2099 says you should be able to name the file with the numbers in the front, and then make sure the track names in the tag are clean for the car’s display.
Some of the media players I use are a headache with multi-disk audiobooks. if I copy the files straight to the car it will play disk 1 track 1, disk 2 track 1, disk 3 track 1, disk 1 track 2, disk 2 track 2, disk 3 track 2… stupid…
Some experimenting came down to using track numbers with the disk no embedded into it. So track 101, 102… 201, 202,… 301, 302,… etc. This means in my case I have to copy files out of my media collection onto a USB stick. Then edit them on the stick to make the “car compliant”. Then take that stick to the car.