I go by hypermiler advice, optimize distance traveled by car. Choose spot closest to entry-exit path of car park. Park closer to exit, and so that you don't ne

I go by hypermiler advice, optimize distance traveled by car. Choose spot closest to entry-exit path of car park. Park closer to exit, and so that you don't need to reverse out, minimize inefficient slow/idle movement with cold engine. And any additional walking is a bonus as mentioned by several people here.