What can Brown do for you? Go green, of course. Thanks to help from the Environmental Protection Agency, a handful of UPS delivery trucks now tout something sexier under its hood: a new, EPA-patented hydraulic-hybrid system. The cutting-edge technology allows trucks to capture and store energy just as a battery does, allowing the vehicles to recover 70 percent of the energy normally wasted on braking (which saves on fuel and limits harmful emissions). The first group of hydraulic-hybrid trucks will be deployed this winter in Minneapolis, Minn. While the brown fleet might seem ordinary, it’s what’s under the hood that counts.