Incredibly useful tame on Scorched Earth as a taming mount before flyers are avaulable, at leaat for 2-3 player tribes. It's immense speed and stamina mean you can outrun anything while your friends pepper it with tranqs. And when the tranqed animal starts running, you can coast along side it and have your friends release a tranq arrow broadside! Especially useful for large animals (Rex, Paracer)
Max stamina and movement speed for great trolling fun. Have a friend sit on the back with tranq darts and longneck. Run up to people, dart to the head, go "meep meep" and zoom away. Watch the rage in global chat and giggle.
They might be useless for some YouTubers. But these things are literally the FASTEST thing in the game. They are even better on multiplayer. They can carry loads of ppl to quickly enter the battlefield when you are raiding them and the Dino gate is exploded. One person drives the Gallimimus and the other two shoots with the assault rifle. Totally op