If you didn't preorder The Amazing Spider-Man video game through Gamestop or you just can't wait to see it, I have found two videos that show the contents of the DLC pack. This first video show the timed challenge mode that involves hitting cars to score points, hitting taxis to gain extra time and avoiding larger objects.
This next (lower quality) video shows the free-roam Rhino which is basically the same minus the timed and point aspect.
After seeing this I sure am glad I preordered the game from amazon to get the Stan Lee DLC. Rhino, while fun at first, looks to get boring after a while. What do you think? If you got this DLC, do you regret it? Leave your thoughts in the comments.