and Motor-generator 2 in the power split device. The shallow cycling enables the hybrid battery to last tens of thousands of cycles, which translates into decades of use and in many cases more than of operation. The computer controlled charging and discharging of the battery enhances its cycle life, calendar life, and thermal control performance. Passive battery cooling and heating is accomplished through the metal case of the battery assembly pack, while a forced air cooling system with a blower motor and ducting system enables active cooling of the HV battery. It is classified as a SULEV (Super Ultra Low Emissions Vehicle) and is certified by California Air Resources Board as an "Advanced Technology Partial Zero Emission Vehicle" (AT-PZEV). Among the Prius's options are Toyota's implementation of a Smart Key System (the feature can be user-deactivated), DVD navigation on the multi-function display, Vehicle Stability Control and Bluetooth for hands-free calling. A new Intelligent Parking Assist system was available in Japan and Europe since its launch. From 2005 to 2009, the second generation Prius had been built by FAW-Toyota in the city of Changchun for the Chinese market. It was reported that a total of 2,152 Prius were sold in 2006 and 414 in 2007. The relatively low sales was blamed on high price, about higher than the equivalent in Japan or the U.S., caused by high duties on imported parts. In early March 2008, Toyota cut the price of Prius by up to eight percent or to (). It was thought that the sales dropped as a result of both a lack of acceptance and increased competition. The Honda Civic Hybrid was exported to China from 2007. Toyota's design and development efforts paid off during the 2005 European Car of the Year competition where the Prius won ahead of the Citroën C4 and the Ford Focus. The Prius and the Nissan Leaf are the only cars using drivewheel electric motors to have won this competition, where the usual winners are mainstream hatchbacks and sedans/saloons from major European manufacturers. Research plug-ins From 2006 to 2009, Toyota tested 126 Prius models in the U.S., Japan and Europe that had the NiMH battery replaced with a lithium-ion battery pack. In July 2007, Toyota received both Japanese and American governmental approval to begin testing plug-in hybrid models using a modified NiMH battery on public roads. The first plug-in Prius in America went to South