Apparently a person by the name of Rushido Hinamoru has started a YouTube channel named "Grand Tour" and has 274k subscribers and nearly 12 million views total from posting earlier videos that include the trio.
If you're subscribed, or checked it out, you've probably already realized that it isn't real. But the account in question has 8 videos posted up so far.
That channel probably just falls within whats legal since they are only posting short clips, have no ads running, etc. If it was full episodes then this would have been shut down before you could even post about it. At the end of the day we STILL have to go to Amazon or some other source to watch the videos in full.