The sides of the garage floor are higher than the main level at the door for drainage reasons I assume. See pic. I doubt that I would be able to lay VCT in this area. I am sure that others have had this issue. How did you finish the curved areas?
Heat, if you warm up VCT with a heat gun it becomes very pliable. The glue is a pressure sensitive adhesive which will grab the VCT when you roll a vinyl roller over it.