A few years ago I found a paper that tried to calculate what is the most remote part of Europe, by taking the area (+-10 km or so) from the roads.
It was incredible how small the oases for the wildlife are.
And after the fragmentation of the habitats, it's the one-way street for the extinction.
It would be interesting to see the speciation and diversification of Cats, Dogs, Rodents and Pidgeons during the next 10 million years...
(*sarcasm)
Urbanisation is definitely putting a strain on many species.
In the DRC it's getting worse, but the situation isn't as dire as in other countries, this is in part due to the sheer size of the African continent, the Okapi wildlife reserve alone is 1.5 times the area of Yellowstone national park.
I'd be interested to see what kind of data a similar study would yield for Africa.