As anticipated, driving in Kimberley and the Northern territory areas necessarily requires a 4×4 vehicle. Roads are mostly unpaved, with small fords to cross and some highway sections. Also, you should be very careful if you happen to drive in the evening, as it is very common for wallabies and kangaroos to cross the road. This is why all off-road vehicles have an extra protection in front of the bonnet that prevents the car from breaking in the event of a collision with one of these animals.
The agency we turned to was Britz and, given the road conditions we knew we would have faced, we opted for a total insurance coverage. Apart from drilling and damage of any kinds, you might get a damaged glass following the passage of trucks (and when we say trucks, we mean trucks with more than six trailers) that launch rocks at full speed, which crumble under their huge wheels.
We chose a car that allowed us to sleep in it. So, even though it was an off-road vehicle, it was equipped inside as a mini-camper with a fridge, a sink, some storage cabinets, a bed, a sofa, a table, some chairs, a camping light and all the accessories needed for camping.