Saw it in Four-Wheeler magazine. Article from pickuptrucks.com
sounds interesting. Considering a Atkinson-Cycle engine has been in a Pruis for a while they should know how to build one. But... A Pruis is a much different duty-cycle than a truck especially off-road, hauling, towing... Oh and it's only a 3.4 liter down from a 4.0http://news.pickuptrucks.com/2015/01/how-it-works-2016-toyota-tacomas-atkinson-cycle.html