Delta717 From United States of America, joined Mar 2000, 455 posts, RR: 1 Reply 1, posted (12 years 1 month 2 weeks 5 days 20 hours ago) and read 888 times:
This was taken at Miami International where they have sloped taxiways for some reason. If you watch the Just Planes Video from 1998, you see a Servivensa 737-200 doing the same thing and it seems as if it is climbing up a hill.