Currently on a bicycle from Barcelona to Cape town. Looking to switch to a Motorcycle
 

I started out on a bicycle and I really like the simplicity and fitness aspect of it. But I would eventually like to switch to a Motorcycle, so I can travel faster. My International drivers license B Permit from Switzerland only allows me to buy Mopeds. I wanna Switch to a moped somewhere in between Guinea and Cameroon (Camerpon would be ideal). Any advice on how and where to do so would be greatly appreciated.