A milk float is a special kind of vehicle that is specifically designed to deliver milk to people's houses. It's kind of like a big van, but instead of being powered by gas, it runs on electricity. That's because milk floats need to be quiet so they don't wake people up when they make their deliveries early in the morning.
Milk floats are usually used by dairy companies to deliver milk to people's doors. The milk comes in big metal containers called churns, which the driver loads onto the float. Then, they drive around the neighborhood, stopping at different houses to drop off milk bottles.
The float has a special compartment in the back where the bottles of milk are stored. Sometimes, the compartment is refrigerated to keep the milk cold, but other times it's just a plain box.
One of the coolest things about milk floats is that they're really good for the environment because they don't release any pollution into the air. They also don't use any gas, so they're very cheap to run.
So, the next time you wake up in the morning and see a milk delivery on your doorstep, remember that it was brought to you by a very special kind of vehicle called a milk float!