You mean this? http://maps.google.co.uk/?ie=UTF8&ll=-25.63869,28.10244&spn=0.003463,0.009162&z=17&om=1 It looks like its just badly rectified imagery or road data, though the angularity of the road vectors suggest data collected with consumer GPS units. Its interesting that there is no attribution to T4A and that there are no road names.