R12's Weekly Bus Journey To and From Technicraft

Every Wednesday  the Years 7 and 8 travel the same route to attend their Technicraft classes. The distance the students travel is exactly 2km according to my mapping directions and I'm guessing that it takes approximately 5 minutes to get there. Next time I am going to use my timer to accurately measure the time it takes for us to get there.
Can you guess what that could be?