I’m thinking it could be something like ludicrous mode on a Tesla , temporarily moving some cells from parallel to series and providing more voltage for a short period of time. … but that’s just a complete guess , i haven’t been able to find any details or explanation from Eon
Because of the small battery (10S1P) high amps can’t be used for a long time. So the nitro button gives you more amps and cuts it before the battery overheats. On a board with good sized battery (e.g. 10S4P) this isn’t needed.
Or it is simply a gimmick.
On the other side it could be fun to have a a good power setting which is great for controllability. And a button that gives more power if you only want to accelerate hard.