The Winslow Bus is Mayor Marshall Winslow's campaign bus. The Protagonist must stop the bus, hijack it, and drive it onto the train tracks. The bus is modeled after the Cheetah, however it does not read "Cheetah" when entered and has different internal name, sp_charterbus03. It also has a special red and blue paint job.
It is possible to quit the mission after obtaining the bus and keep it, but it cannot be added to a garage or modified at Rim Jobs.
During the mission, Marshall Winslow is sitting on the right side of the bus 3 rows from the front. He never flees the bus, but can be killed without failing the mission. During the mission, the bus cannot be destroyed except by driving it into the water, if the mission is cancelled, the bus can be destroyed normally.
- The defined vehicle name is "Winslow Bus". It cannot normally be added to the garage, but when added by editing the game files, it is listed as "Winslow Bus" in the garage menu.
- Although it is based on the Cheetah, this bus is a separate vehicle and not a variant of the Cheetah. However, there is an unused variant of the Cheetah very similar to the Winslow Bus - the main difference is it has the Cheetah sign on the front of the bus, and displays the Cheetah logo when entering.
- The Logo for the bus reads "Marshal Winslow Campaign Bus", with only one L, although Marshall Winslow is spelled with two Ls.