Toyota may be extending that range begrudgingly, arguing in the documents that it's more important to use technological advancements to bring battery costs and vehicle pricing down for prospective buyers, as opposed to maintaining price and extending all-electric range.
The California mandates are especially relevant because the state is home to what's easily the country's highest sales of plug-in vehicles. Through October, Prius Plug-in Hybrid sales through the entire US were up 4.6 percent from a year earlier to 10,069 units. October sales grew even faster, at an 11-percent clip, to 2,095 units. Last month, Toyota said it would cut the base price of the 2014 model-year Prius Plug In by $2,010 to $29,990.