If I were you I would get a guide. Let them pick you up at the airport. They can show you the high lites of Shanghai for five hours or so and you would one able to at least not panic about getting back. We had a guide the first day and she was amazing. We spent about 6 hours with her. You say you have 10 hours, so it is very feasible. We used Jenny's Tours. You can look it up as it won't let me post her email address.. Our guide was Alice, she spoke perfect English. Driver and her were about $125-$150. I have recommended her to several people. Shanghai is a beautiful city. With a guide you will make the most of your time.

No fee, but you will shop it is irresistible

See if you can find on GOOGLE MAPS with this coordinates: 584 Ren Min Lu Shanghai Shi, China 31.228692, 121.487442 When you look at it through satellite mode, you'll see a zigzag path bridge.