S-Africa insurance requirements

[Wheelie]

What are the insurance requirements in South Africa? I've come to understand that third party insurance is covered by purchase of fuel. Is this true? Does this also include foreign riders on foreign bikes? Also, how does this work... do I need to obtain some kind of proof when purchasing fuel, like a receipt or the likes? Lastly, besides this third party insurance aqcuired at fuel stations, are there any other insurance requirements that are obligatory for foreign riders? I have a Norwegian travvelers insurance policy which will cover my ass (unlimited) in case of an accident, and a limited coverage for my stuff, but thats about it.

We will be shipping our bikes into Cape Town by air, hence we will not cross any "borders" where insurance can be obtained, and will be uninsured when leaving the airport (unless insurance can be acquired there, or if the fuel third party insurance is enough). Any reccomendations or comments regarding this issue would be highly appreciated. We are leaving June 7.th, and will be riding directly from the Airport in Cape Town to Nairobi (only stopping to fuel, sleep, eat, etc., and no hanging about). We are therefore in a hurry.