In the wilds
Driving around Zambia isn't for the novice, or the unprepared. Long stretches of the tarred roads are extensively potholed, most of the secondary gravel roads are in very poor repair, and many areas rely on bush tracks maintained only by the passage of vehicles. If you plan on exploring in the more rural areas, and remote parks, then you will need at least two sturdy, fully equipped 4WD vehicles. It says something of the roads in general that several of Zambia's car-hire companies rent vehicles (saloons for use only in the towns) only if you take a local driver.