[potatolicious]

Google Maps doesn't do depth or man-made obstructions to walking. The bus he's trying to catch is directly on top of the underground station, leading a simplistic walk estimator to give a near-instantaneous result. In actuality there are multiple stairs as well as a bottleneck-prone exit gate.

[khuey]

Transit apps need to implement the concept of "Minimum Connection Time" that airlines use to determine legal connections at airports.