The video gives a better indication that the Golden Queen Track actually takes place in liquid gold. The screenshot had me thinking it might just be a reflection in the water. Makes me wonder if any other tracks will have you driving in non-water environments. Will the vehicles handle differently in them?
To be fair, fantasy game. Technically you shouldn't be able to drive anything with an engine on liquid gold, because it's get stuck inside it, not to mention how hot it would need to be to stay open as a river like that.
So probably every liquid will act the same,but the landmass obstacles will be different, like in Frozen Fossil Festival where you can only get through by slipping on the ice if you come out fast out of water, otherwise you'll nearly stop over it.
Luminous, there's also Frightbeard,confirmed by Tropic Plunder having the Phantom Tide anchored.
I'm checking the Singleplayer Online video, where Chill Bill appears. Yup, it's him, you see a buncha crystals coming past Reef Ripper when he attacks.