The Short Bus was the nickname Coulson's Team gave to the van they used in Belarus while tracking Akela Amador.
When Phil Coulson and his team went to Belarus pursuing Akela Amador, they concealed themselves in a rented van instead of using their official vehicle.
In the town of Zloda, agents Coulson and Grant Ward tried to locate Amador while agents Leo Fitz, Jemma Simmons and Skye performed surveillance activities in the Short Bus.
However, Amador located the trio, and charged against the Short Bus with her own van before escaping. None of the team members were injured; however, the Short Bus was never used again.