For some reason the Speed D3/7 don't have an internal hub gears, I don't know why, I see them on the Dahon website as having internal hub gears but where ever I see them used they have a plain derailleur gears. Here is a link to a typical store that sells the Speed D7:
http://www.fridman.co.il/49691/dahon-speed-d7

Am I looking wrong at something?