There's some magic happening at Mazda's design studios. A mad line of concept cars - which includes the slightly divine Furai has given us its next instalment. The equally nutty and equally fascinating Kiyora. Where many of the earlier concepts used 'Wind' as a design theme, the Kiyora uses running water. (Stop with the toilet humour at the back.) The name, by the way, means "clean and pure", and ties in with Mazda's vision of 'Sustainable Zoom-Zoom'. we told you to stop sniggering, didn't we. The Kiyora's designed around maximum aerodynamic efficiency, and has a very lightweight platform for better handling and reduced fuel consumption from the fourth generation direct injection engine, which switches off each time you stop or idle at a traffic light. Which all sounds great.