Buying a car in Sao Tome and Principe

Hi,

To be able to move in Sao Tome and Principe, a lot of expatriates think of buying a car, whether new or second-hand.

What are the formalities to buy a vehicle in Sao Tome and Principe: car registration, insurance, etc.?

What are the relevant authorities or organizations to contact?

How long does it take and what are the associated costs?

Thank you in advance for sharing your experience,

Kenjee