這款兩人座迷你汽車命名為Branded Hiriko，是巴斯克語「城市」的意思。Branded Hiriko長2公尺、重450公斤。當四個輪子往內縮、駕駛倉向上摺疊時，車身底盤便因此縮小，所以可以減小停車空間。
這款電動車是由已故教授威簾米切爾（William J. Mitchell's, 1944-2010）所帶領的智慧城市研究團隊（Smart Cities research group）所設計，預期對塞車、能源和土地使用的浪費、空氣汙染和噪音問題、以及會導致全球暖化的二氧化碳排放量等問題，將身負重任。
A foldable electric CityCar has been created at the Massachusetts Institute of Technology's Media Lab and commercialized by a consortium of automotive suppliers in Spain's Basque region.
Since 2009, the MIT Media Lab has collaborated with Denokinn, the Basque Center for innovation, from Vitoria, Spain, and their partner companies to refine the design and technology of the CityCar ahead of its commercialization.
Branded Hiriko, which means urban in the Basque language, these two-passenger micro cars are just two meters long and weigh 450 kilos. The passenger cabin can slide upwards as the wheels roll together, folding the chassis to minimize the car's footprint when parked.
When folded, three CityCars can fit into one traditional parking space, making parking much more efficient in crowded cities.
The Hiriko's electric motors are in the wheels, called Robot Wheels. Each Robot Wheel can be independently controlled, allowing the CityCar to execute tight maneuvers such as spinning on its own axis to achieve what MIT calls an "O-turn." The Robot Wheel modules are controlled electronically using by-wire systems made popular by the aerospace industry.
The CityCar runs on two rechargeable lithium-ion batteries with a range of 120 kilometers . Its top speed is curbed electronically to comply with speed limits in city centers.
Several cities have shown interest in the CityCar - Barcelona, Berlin, Hong Kong, San Francisco, Malmö in Sweden, Quito and the Galapagos Islands in Ecuador and Vitoria-Gasteiz, the second largest city in the Basque region.
Private citizens as well as cities will be able to purchase the folding cars at prices around 12,500 euros (US$16,600).
The late Professor William J. Mitchell's (1944-2010) Smart Cities research group designed the CityCar to take on the biggest issues facing cities - congestion, inefficient use of energy and land, air and noise pollution, and carbon emissions leading to global warming.