The fav and the history feature can remember more than one car. This comes in handy, say, one is traveling. For example, I need to mark where I park in the air port. Then at my travel destination, I need to mark my rented car.
Intuitive to use.
The features mentioned are upgrade feature which is worth the price ($0.99)
Catsladder about Find Your Car with AR, v3.1.0