Inductive power transfer

Hi,

about the brush method:

Do you know Carrera cars?
They are powered by the tracks they are driving on.
The cars got metal brushes underneath to make the contact to the metal-lanes on the tracks.

Brushes on the cars:
http://img3.imageshack.us/img3/6623/1313943691242.jpg

Metal-Lanes on the Tracks: