are permanently attached to the floor and seat stanchions are aligned, facilitating the longitudinal rolling of the seats. Bench seat stanchions were moved inboard to reduce bending stress in the seat frames, allowing them to be lighter. When configured as two- and three- person benches, the Easy Out Roller Seats could be unwieldy. In subsequent generations of the Chrysler minivans, beginning in 2001, second and third row seats became available in a 'quad' configuration – bucket or captain chairs in the second row and a third row three-person 50/50 split "bench" — with each section weighing under . Alternative-fuel vehicles In 1999, Dodge introduced the Caravan EPIC, a fully electric minivan. The EPIC was powered by 28 12-volt NiMH batteries and was capable of traveling up to on a single charge. The EPIC was sold as a fleet-only lease vehicle. Production of the EPIC was discontinued in 2001. Only a few hundred of these vehicles were produced and sold. After the leases expired they were returned and crushed. Approximately 10 vans remain in private hands today. Concept vehicles In 1999, coinciding with the 15th anniversary of Chrysler minivan production, Chrysler unveiled three concept minivans, largely intended to further advance the divisional styling and design of each vehicle. Chrysler Pacifica The Chrysler Pacifica, derived from the Chrysler Town & Country, was given an exterior and interior restyling. Similar to a full-size conversion van, the Pacifica was given a raised roof for increased headroom, with a full-length skylight. In a 2+2+2 seating layout, the Pacifica was fitted with power-operated middle-row seats (with power-operated footrests). The exterior adapted design elements of the flagship Chrysler LHS sedan, including a (smaller) version of its grille and modified versions of its headlamps. From 2004 to 2008, the Chrysler Pacifica nameplate saw use on a production vehicle, as a CUV derived from the Grand Caravan/Town & Country. For 2017, the Pacifica nameplate was again revived, used on the current generation of Chrysler-division minivans. Dodge Caravan R/T As a follow-up to the 1996 Dodge Caravan ESS, the 1999 Dodge Caravan R/T replaced the 3.8L V6 with the 3.5L V6 of the Chrysler 300M, increasing output to 253 hp, paired with the 4-speed AutoStick transmission. The Dodge Caravan adapted several styling elements from the Dodge Viper RT/10, including hoodscoops (carried directly over from the Viper), and a redesigned lower fascia that shifted the Dodge "crosshair" grille into the lower