Mass transit is a capacity multiplier. If 35 people are headed in the same direction compare that with the infrastructure needed to handle 35 cars. Road capacity, parking capacity, car dealerships, gas stations, repair shops, insurance, car loans.

Believe it or not, in some cities that have near grid-lock rush-hour traffic - there's between 50-100%+ as many people traveling by bus as by car.

If all of those people switch to cars, you end up with it taking an hour to travel 1 mile by car.

It's almost as if they have busses for a reason.