Yes, you can drive to Namibia from South Africa, and there are several border posts where you can cross, including a couple through transfrontier parks. Driving can make sense if you specifically want to include places along the way or enjoy long overland journeys.
For most travellers, though, it’s worth thinking carefully. The drive usually takes at least two long days on fairly monotonous roads, and one-way vehicle drop-off fees can add significantly to the cost.
In many cases, it works out far better to fly from South Africa to Namibia, collect your rental vehicle on arrival, and spend those extra days exploring Namibia itself rather than covering long distances just to get there.
