If a girl asks to hangout in your car at the end of a date does she want you to make a move?

I (25) went out with a girl (23) recently and things were going well. After we left the bar we were walking around the area for a bit and she said her friend had gone home with somebody. A few minutes later she asked if we could hangout in my car because her legs were getting tired. I didn’t make a move and she ghosted lol