Coupling mechanism for light vehicles

A coupling mechanism for coupling a light vehicle to a surface, the coupling mechanism comprising:

• a magnetic coupling device, configured to be attached to the light vehicle, and arranged such that it may be switched between a first mode and a second mode, wherein in the first mode the magnetic coupling device generates an external magnetic field less than a first strength, and in the second mode the magnetic coupling device generates an external magnetic field of at least a second strength, the second strength being greater than the first strength;
• and
• a surface detection unit, configured to be attached to the light vehicle, and arranged in use to determine a distance between the light vehicle and the surface and to determine when the light vehicle is within a predetermined distance of the surface,
• wherein in response to the surface detection unit determining that the light vehicle is within the predetermined distance, switching the magnetic coupling device from the first mode to the second mode, to couple the magnetic coupling device to the surface and thereby secure the light vehicle to the surface.