red vehicles that carry people and drive on bus lanes. It is quite hard to steal unless you know where to get in. To steal it, you need to go to the driver's door, and press circle. Most people get in from the back.
The speed is really poor. The handling is just as slow as the speed. It takes really long for it to move its wheels which makes it a nightmare at sharp turns. Handling is just as bad as the speed. As the Bus is a large vehicle, it is quite hard to handle at top speed (which is still slow) and sharp turns. You'll need to be very careful with the handling because it is very annoying when you spin out of control.
You can find the double-decker bus almost anywhere around London. It's a public transport vehicle, so it picks up people all over the place.