Vanpool is when a group of grown-ups who work in the same place and live near each other decide to ride together to work. They all get on a bigger car called "van" instead of driving in their own cars. This way, they can save money on gas, car maintenance, and parking, while also helping the environment by reducing traffic on the road. They take turns driving the van and splitting the cost of gas, tolls, insurance, and upkeep. It's like a carpool, but with a bigger car that can hold more people. Think of it as a fun road trip with your friends every day!