The 2001 Toyota line-up can be billed as a revolutionary year for their North American product selection. After years in Japan, Toyota's gasoline-electric hybrid Prius is coming to the United States. One of the first of its type to be sold in mass production, the Toyota Prius intelligent use of both power sources allows fuel economy of up to 52 miles per gallon city to be accomplished. Based on the Tundra truck chassis, the 2001 Toyota Sequoia premieres a large sport utility vehicle with standard V-8 power. After a successful first-generation release of the RAV4 in North America, the popular compact sport utility vehicle arrives as only a four-door version. Toyota has also chosen the 2001 model year to debut their new Highlander mid-sized crossover vehicle based on a car platform of the Camry sedan. For 2001, the Toyota Sienna has undergone a mild redesign and receives a more powerful V-6 engine with integrated variable valve timing. The mid-cycle refresh also promotes dual rear passenger sliding doors to the entire minivan range. A mild makeover has also been applied to the Toyota 4Runner for 2001 in addition to the standard inclusion of Vehicle Stability Control. With the Tacoma, a new Double Cab four-door model debuts providing optimized interior comfort.