Overdrive 4 April 2015 - News including: Mercedes’ new pickup; Toyota's low cost automatic braking; Ford speed-sign scanner; London's new low emission zone; Seoul creates dedicated fire truck lanes; Longer Semis and Russia's new superhighway connects continents.

We discuss the outcome of Melbourne's brave new attempt to start something different to the traditional motor show.

We road test the Renault Megane Station wagon.

And in Quirky News the crazy DeltaWing concept car goes into production and scrap cars become a giant transformer.