You are an airport manager. Your airport is considering building a brand new international terminal. However, due to space constraints, the airport is only able to build a satellite terminal, away from the rest of the terminal buildings. The airport currently has no automated people mover $($APM$)$ available and only has one bus that can be used to transport passengers to the satellite terminal. Airport sponsors have left you with the final decision: invest in a state of the art APM system, which will connect the entire airport via a train system, or investing in buses to move people to and from the satellite terminal. The APM project is estimated to cost $1\mathrm{.}2$ billion dollars and will take $3$ years to complete, while integrating electric buses will cost $$1\mathrm{.}1$ million dollars per bus, not including employee wages, and can be operated in $3$ months time. It's important to note that each bus can only carry $25$ passengers at a time. The terminal building plans on starting operations three years from now. Which would you chose for your airport and why?