Remember kids... always wear a helmet. (The almighty bikeradar helmet thread)

You're obsessed skydancer. Why didn't you point out the sunglasses and the cycling shoes and the lycra, oh and the gloves... on a coach.... tutut

Sunglassess are a must to reduce the glare coming through those big windows.
Cycling shoes have a nice solid base that prevents you scrunching your foot up under the seat in front and causing an injury
lycra is comfortable whereas loose clothing could knock over someones coffee when you walk past them to go for a pee
gloves prevent you burning your hands on thin hot cardboard coffee cups

all pretty sensible stuff really.