Volvo's first self driving cars will be unmarked to avoid other drivers from 'challenging' them

Volvo's first self driving cars to hit Britain's roads will look no different to its other models to avoid other motorists from trying to "challenge" them. 
The car marque's pilot project to lease the first autonomous vehicles to everyday drivers will see 100 self-driving 4x4 vehicles take to the busy main roads into London from 2018. 
Erik Coelingh, senior technical leader at Volvo Cars said the decision to make the cars unidentifiable from regular vehicles comes a