Today my boyfriend bought a '02 mustang. when he came home and asked if i wanted to ride, I was like sure. I noticed something pouring from under the car that smelled like gas. The odor was stronger in the back of the car & you can strongly smell the fumes inside the cabin of the car, so I opened the trunk & to my surprise there was gas about 1" deep where the spare tire goes, and the little black charcoal filter was gooey and whipped off when I was trying to clean the gas out the bottom of the trunk. Also, the passenger window will not go down, when you shut the passenger door the window is on the outside of the top and has a 2.5" gap between it and the small window in the back nor will the small rear window on the driver side go down. Does anyone have any suggestions on what may be the cause of these issues? Thank you in advance

-Patricia