It will be fine.
No matter what, if you use the garage the floor is never going to be as nice as the day you put it down.
It's either don't use the garage, keep it a meseum, or don't worry too much about the floor.
That is one of the main reasons I didn't spend $5-6k on a pro job but rather $300 on a DIY. If it's trashed in 5-6 years, not the end of the world.