I'll be taking a rental car to the Apartheid Museum from the vicinity of the airport. When I go to the Museum's website, they recommend taking the Oberholter Freeway to Main Reef Road, turning left on Crownwood Rd, and then a final left on Northern Park Way. When I look at google maps, it seems more straightforward, and more highway, to stay on the M1 and get off on Exit 7, which seems to be Northern Park Way. Is there a reason not to go this more "obvious" way?
Once there, can I assume that there is safe, guarded parking? I assume there's no reason to be paranoid about leaving something in the trunk?
Also, on a Sunday, can I expect the drive across JoBurg to be reasonably free of traffic jams?