Here's a new Glitch Shortcut on Parkway. You can definitely do it no-stop, but it'll be really hard. This way took me over an hour to do, but I'm not the best glitch-er.
There is an easier method, but it saves less time, if any:
I don't really know how much time either one saves, but at the very least, it looks cool.
Maybe at some point this could be in the 200cc No-Glitch WR.