A plug 'n' play electrified trailer that reduces fuel consumption on trucks to about the level they can do without a trailer onRange Energy VIEW 2 IMAGES Range Energy makes truck trailers, with a clever connection to any standard tractor cab, loaded with electric powertrains to turn any semi into an efficient hybrid. They also let you push entire trailers around by hand at the depot in "shopping cart mode." Range's 53-foot (16-m) RA-01 trailer packs its own 200-kWh battery, as well as an 800-volt e-axle powertrain that can put up to 14,000 Nm (10,326 lb-ft) of torque, at up...