Consider the total cost of traveling from point A to point B. The cost of traveling by car would include the cost of gasoline and the opportunity cost of time; the cost of hopping on a bus would include the bus ticket and the opportunity cost of time. Assume that the bus ticket costs less than the gasoline. Does this imply that using a bus to get to the destination involves lower total costs than getting there by car? What if the bus doesn’t take the fastest route from point A to point B?