'self-driving' Mercedes car.

Imagine racing through traffic on a busy street in Lagos, Nigeria; say, Ikorodu road or Third  Mainland Bridge. A particular car stays ahead of you all the time. You are curious to know who is  behind the wheels, so you double up. Lucky for you, there's a red-light ahead, so you take  advantage and change lanes so you can stop just beside this car. It is then you discover there was no driver. It’s the Mercedes F015 Luxury in Motion concept car.