It looks like many years ago somebody was coming down the hill from the top of Mt. Dufferin in an old International pickup truck, they were going too fast and missed a curve just below the summit. If you look for what remains of the wreckage, you should be able to find the cache.
Cache maintenance on Aug 20/24. New container and log book.
The cache is in medium sized plastic container and although the site can be reached from above, it is best accessed from below.