Any adhesive backed tapes or patches WILL melt sooner or later and not only will it stick to your car seat, it will start sticking to your shirt, coat, etc. The heat inside a locked car is way too hot for most of these adhesives. There are products made for that purpose and it is the type that can be applied like caulking and cure to a flexible surface. All things are temporary, but check out this video. It works to fill in missing vinyl and leather surface wear as well as tears and cracks.
Forgot the link - [ame]https://www.youtube.com/watch?v=8ejC6HZYMBA[/ame]