Public transport is a carbon-cutting champion. A full bus can take 40-50 cars off the road. That's a massive drop in emissions per person.
Trains are even better. They can move hundreds of people while using far less energy than if everyone drove. In fact,
research shows that trains produce about 1/5 the emissions of cars per passenger kilometre.
Your wallet wins too. No parking fees, less money spent on fuel, and often cheaper than owning a car. Plus, you can use travel time to read, work, or relax, try doing that while driving!