This is from August so it's a bit dated. Interesting though because it gives the price. (450,000 rand is approximately £32,700)
http://www.businessday.co.za/articles/leisure.aspx?ID=BD4A251452
Presumably this venture was a follow on from when the South African Tourist Board invited 80 cabbies over there back in 2001. (Which in turn was a follow on from their advertising campaign in, I think, London in 1999.)
Note. The fuel consumption figures they give should read km per litre, not per 100 litres.