An auto worker feeds aluminum panels to robots at Ford's Kansas City Assembly Plant where new aluminum intensive Ford F-Series pickups are built in Claycomo, Missouri May 5, 2015. (Photo by Dave Kaup/Reuters)

An auto worker assembles a skid as a truck cab is being lifted into position at Ford's Kansas City Assembly Plant where new aluminum intensive Ford F-Series pickups are built in Claycomo, Missouri May 5, 2015. (Photo by Dave Kaup/Reuters)

Robotic arms weld a Ford Transit Van being made at their Kansas City Assembly Plant where the new aluminum intensive Ford F-Series pickups are also built in Claycomo, Missouri May 5, 2015. (Photo by Dave Kaup/Reuters)

Robotic arms rivet floor panels together at Ford's Kansas City Assembly Plant where the new aluminum intensive Ford F-Series pickups are built in Claycomo, Missouri May 5, 2015. (Photo by Dave Kaup/Reuters)

Pallets full of aluminum components await use at Ford's Kansas City Assembly Plant where new aluminum intensive Ford F-Series pickups are built in Claycomo, Missouri May 5, 2015. (Photo by Dave Kaup/Reuters)

Auto worker Jared Eudier checks a seam on an F150 cab at Ford's Kansas City Assembly Plant where new aluminum intensive Ford F-Series pickups are built in Claycomo, Missouri May 5, 2015. (Photo by Dave Kaup/Reuters)

Auto workers feed aluminum panels to robots at Ford's Kansas City Assembly Plant where new aluminum intensive Ford F-Series pickups are built in Claycomo, Missouri May 5, 2015. (Photo by Dave Kaup/Reuters)

Auto parts are moved to where they are needed at Ford's Kansas City Assembly Plant where new aluminum intensive Ford F-Series pickups are built in Claycomo, Missouri May 5, 2015. (Photo by Dave Kaup/Reuters)

Auto worker Melinda Barnett installs components into a F150 at Ford's Kansas City Assembly Plant where new aluminum intensive Ford F-Series pickup is built in Claycomo, Missouri May 5, 2015. (Photo by Dave Kaup/Reuters)

Auto worker Christopher Brower screws a component into the cab of a four-door F150 at Ford's Kansas City Assembly Plant where new aluminum intensive Ford F-Series pickups are built in Claycomo, Missouri May 5, 2015. (Photo by Dave Kaup/Reuters)

Auto worker Betty Smith assembles a dashboard at Ford's Kansas City Assembly Plant where new aluminum intensive Ford F-Series pickup is built in Claycomo, Missouri May 5, 2015. (Photo by Dave Kaup/Reuters)

Auto worker Denell Sadler installs parts into the bed of a F150 at Ford's Kansas City Assembly Plant where new aluminum intensive Ford F-Series pickup is built in Claycomo, Missouri May 5, 2015. (Photo by Dave Kaup/Reuters)

An auto worker makes one of only two welds that are needed in the aluminum cab of a F150 at Ford's Kansas City Assembly Plant where new aluminum intensive Ford F-Series pickup is built in Claycomo, Missouri May 5, 2015. (Photo by Dave Kaup/Reuters)

A completed Ford F150 truck is conveyed to the end of the line at the Kansas City Assembly Plant where new aluminum intensive Ford F-Series pickups are built in Claycomo, Missouri May 5, 2015. (Photo by Dave Kaup/Reuters)

A finished Ford F150 pickup leaves the final inspection station at Ford's Kansas City Assembly Plant where new aluminum intensive Ford F-Series pickups are built in Claycomo, Missouri May 5, 2015. (Photo by Dave Kaup/Reuters)

Auto worker Jim Hamilton looks for imperfections on a completed Ford F150 pickup at the Kansas City Assembly Plant where new aluminum intensive Ford F-Series pickup is built in Claycomo, Missouri May 5, 2015. (Photo by Dave Kaup/Reuters)

The front grill of a finished Ford F150 pickup reflects the inspection light on the final line of Ford's Kansas City Assembly Plant where new aluminum intensive Ford F-Series pickups are built in Claycomo, Missouri May 5, 2015. (Photo by Dave Kaup/Reuters)

Robotic arms rivet together the cab of a Ford F150 pickup at the Kansas City Assembly Plant where new aluminum intensive Ford F-Series pickups are built in Claycomo, Missouri May 5, 2015. (Photo by Dave Kaup/Reuters)

An employee works on the automobile assembly line of a Renault Clio IV at the Renault automobile factory in Flins, west of Paris, France, May 5, 2015. France's car sales rose 2.3 percent in April to reach 170,768 registrations with Renault's performance outpacing its peer Peugeot, the CCFA industry association said on Monday. (Photo by Benoit Tessier/Reuters)

An employee works on the automobile assembly line of a Renault Clio IV at the Renault automobile factory in Flins, west of Paris, France, May 5, 2015. (Photo by Benoit Tessier/Reuters)

Employees works on the automobile assembly line of a Renault Clio IV at the Renault automobile factory in Flins, west of Paris, France, May 5, 2015. (Photo by Benoit Tessier/Reuters)

Engines are seen on the automobile assembly line for the Renault Clio IV at the Renault automobile factory in Flins, west of Paris, France, May 5, 2015. (Photo by Benoit Tessier/Reuters)

An employee works on the automobile assembly line of a Renault Clio IV at the Renault automobile factory in Flins, west of Paris, France, May 5, 2015. (Photo by Benoit Tessier/Reuters)

An employee works on the automobile assembly line of a Renault Clio IV at the Renault automobile factory in Flins, west of Paris, France, May 5, 2015. (Photo by Benoit Tessier/Reuters)

Employees work on the automobile assembly line of a Renault Clio IV at the Renault automobile factory in Flins, west of Paris, France, May 5, 2015. (Photo by Benoit Tessier/Reuters)

Employees work on the automobile assembly line of a Renault Clio IV at the Renault automobile factory in Flins, west of Paris, France, May 5, 2015. (Photo by Benoit Tessier/Reuters)

Employees work on the automobile assembly line of a Renault Clio IV at the Renault automobile factory in Flins, west of Paris, France, May 5, 2015. (Photo by Benoit Tessier/Reuters)

Engines are seen on the automobile assembly line for the Renault Clio IV at the Renault automobile factory in Flins, west of Paris, France, May 5, 2015. (Photo by Benoit Tessier/Reuters)

A Renault Clio IV car is pictured in the final check area at the Renault automobile factory in Flins, west of Paris, France, May 5, 2015. (Photo by Benoit Tessier/Reuters)

An employee works on the automobile assembly line of a Renault Clio IV at the Renault automobile factory in Flins, west of Paris, France, May 5, 2015. (Photo by Benoit Tessier/Reuters)

A view shows the automobile assembly line as robots work on the construction of Renault Clio IV at the Renault automobile factory in Flins, west of Paris, France, May 5, 2015. (Photo by Benoit Tessier/Reuters)

An employee works on the automobile assembly line of a Renault Clio IV at the Renault automobile factory in Flins, west of Paris, France, May 5, 2015. (Photo by Benoit Tessier/Reuters)