Tokyo plans for 30 battery-electric models by 2030, to sell 3.5 million BEVs per year by that date, and that its premium-brand Lexus will be 100% battery-operated by 2030 in North America, Europe, and China. The company announced investments of $70 billion into the company's electrification. Toyota has been developing solid-state batteries in partnership with Panasonic, in which the company has more than a thousand patents covering solid-state batteries by late 2020. The technology has been implemented on the Toyota LQ concept. Toyota hopes the technology could increase efficiency of battery electric vehicles by 30 percent, which in turn would reduce battery costs by the same amount. Hydrogen fuel-cell In 2002, Toyota began a development and demonstration program to test the Toyota FCHV, a hybrid hydrogen fuel cell vehicle based on the Toyota Highlander production SUV. Toyota also built a FCHV bus based on the Hino Blue Ribbon City low-floor bus. Toyota has built several prototypes/concepts of the FCHV since 1997, including the Toyota FCHV-1, FCHV-2, FCHV-3, FCHV-4, and Toyota FCHV-adv. The Toyota FCV-R fuel cell concept car was unveiled at the 2011 Tokyo Motor Show. The FCV-R sedan seats four and has a fuel cell stack including a 70 MPa high-pressure hydrogen tank, which can deliver a range of under the Japanese JC08 test cycle. Toyota said the car was planned for launch in about 2015. In August 2012, Toyota announced its plans to start retail sales of a hydrogen fuel-cell sedan in California in 2015. Toyota expects to become a leader in this technology. The prototype of its first hydrogen fuel cell vehicle will be exhibited at the November 2013 Tokyo Motor Show, and in the United States at the January 2014 Consumer Electronics Show. Toyota's first hydrogen fuel-cell vehicles to be sold commercially, the Toyota Mirai (Japanese for "future"), was unveiled at the November 2014 Los Angeles Auto Show. In January 2015, it was announced that production of the Mirai fuel cell vehicle would increase from 700 units in 2015 to approximately 2,000 in 2016 and 3,000 in 2017. Sales in Japan began on December 15, 2014, at a price of (~). The Japanese government plans to support the commercialization of fuel-cell vehicles with a subsidy of (~). Retail sales in the U.S. began in August 2015 at a price of before any government incentives. Initially, the Mirai will only be available in California. The market release