There are other costs. Why not hire a driver? I worked there and had a driver the entire time. Granted that was many years ago, however the locals knew where to go, where to eat, what was safe, where not to go, introduced me to their families and many other positive aspects to hiring over buying or renting.
100%. Any time I roll into a strange town, I talk to the cabbies or hired driver
I like your idea. In some areas of the world, hiring a driver (vehicle included) can be cheaper and maybe even safer than going it alone. I know the Philippines was one such place where people could inexpensively hire dedicated jeepney drivers. I don’t know if Nairobi is like that, but it’s worth asking.