I don't have my game with me right now, but it looks like if you're starting from the Temple of the Ancients, and go along the coast against the small islands south-west of the temple, you can get back to the Gold Saucer.
Where's the buggy located on your map?
FFVII Analysis... SEXIFIED! :O
I love my Squall of SeeD / Squall / Glenn / Belle-Bambi / Glennevieve / Bishie / Mr. Scientist Man / Duck-Lover / Geeky Boi / Okies with all my heart.