South Africa is so easy to travel around by rental car. We usually use Avis and get the Super Cover for peace of mind although we have never had any issues with them. I always found the best prices on the South Africa site but you should check a few options like the USA & UK sites as well to see if there are any specials on. Distances are great and towns can be few and far between so it’s best to top up your fuel tank each time you pass a major town.
We did the trip from Cape Town to Kgalagadi Transfrontier Park in 3 days with a 2 day break in Oudtshoorn to check out some of the attractions there.
The scenery on this route isn’t that interesting but we did make excellent time as the terrain is flat and easy to drive and there wasn’t much traffic.
We left Cape Town very early in the morning and drove hard to Birds of Eden so we could have as much time as possible there. It was so amazing, we went back in 2014 so I have good coverage of Birds of Eden. 2014 Part 1 2014 Part 2
We stayed there until it closed, then drove to Oudtshoorn arriving very late at night at a small guesthouse.