It's a cool programming problem to work on over a few courses. For example at the start when learning basic programming you just code a functional elevator (ie.

It's a cool programming problem to work on over a few courses. For example at the start when learning basic programming you just code a functional elevator (ie. a user presses a button, the elevator goes there, picks them up and delivers them). Then you get to add more people, queuing of commands etc (helping you discover some different algorithms and data structures). Then you can throw in some advanced predictive code and machine learning, taking into consideration usage vs time, locations people most travel to/from etc.