Saw the same add yesterday on pistonheads, unfortunately its a scam 100%, pistonheads is now full of these nigerian scammers.
If you look at the contact details he only has an email address, if you email him he will probably come back with some story saying the car is out of the country but to secure it you can pay him through western union etc etc.
Also the chances are the vehicle is being sold legitimately on the internet somewhere on autotrader/ebay but the scammer has just copied the photos and description over.