My entry to the speed TASing competition, done in slightly more than an hour. Made with BizHawk 1.8.0, manually deleting the extensions because the site parser is outdated.
Completes the race in 5'57, the fastest I could manage. I don't see how to bring this time down, unless a much better way of shifting gears is found or you can get the speed up faster than 2 every 2 frames.