The near - identical Renault Twingo GT and Smart ForFour Brabus are the only two cars available that rival the Up. (evo.co.uk)
Its new Smart Forfour seems the right size, and it is rear - wheel drive like the current Google prototype. (automobilemag.com)
Under the skin it's very similar to Renault's new Twingo (which also heralds the return of the four - door Smart Forfour) and shares its rear - engined, rear - wheel drive layout. (evo.co.uk)