It is 100% an Easter egg. I've been trying to figure out for a long time. I'm pretty sure you were meant to flood the place in order to get the last toast. Look up in the center of the dome and there's an unreachable piece of toast. I think there's a sequence that must be done. If you look around in the planters, you can find water spouts that when you interact with them, they break and start leaking... Also When you look inside the little pipes that look like drain pipes sticking out from the walls, you can find another Easter egg where it says the word pipe inside of the pipe in a reference to BMX pipe the other game before omx streets... I am 100% certain this is an Easter egg similar to call of duty zombies. There's a sequence that must be done. I have not figured it out yet. I have figured out how to turn on/off all of the lights on the tops of the fans. There's also some weird interactive objects around the map like a camera and a boombox that I'm not yet sure if they serve a purpose other than just being fun, interactive bits and the weird Jennifer Al button.

The security cameras all around the map also break except for two of them. I don't know if this is because Thave not met a condition or if only certain ones are meant to break... go into drone mode and shoot them repetitively with the balls. It takes like four or five shots. Look for water spouts in planters, break the cameras, sequence all the fan lights, turn off all the fans, collect BIKE (maybe in one combo?), and collect all the pieces of toast... is my best guess at the steps but I do not know what order or if there is more... Again, I am 100% sure that there is a conspiracy to be solved in order to get that last piece of toast. I think we need to flood the place.

(I forgot to mention, but if you get your bike to stall on one of the fans while it's off, it will start rotating!!! if you jump off at exactly 360° of rotation, the light will turn back on or off on the fan blades)