"Tony Raven" wrote in message
...
http://www.five.tv/accessibility/programmes/gadgetshow/

Black boxes are most famous for being used on which form of transport? Is
it

a. Aeroplanes
b. Trams
c. Bicycles

Derrrr.....!
There's a black box mounted on a bike in the latest edition of _cycle_. I
think it's a light.

KC