Having also just read the web report, I THINK it works as follows:
The A3 cars are t be beuilt here in South Africa.
The cars can be purchased by all of the A1 countries, and used in that country.
I don't think the idea is that all drivers come to SA for the A3 series.
Maybe A3 will move around the world as a circus, holding racing clinics as they go.
Will try get more info and advise..
T
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