Abstract: An in-situ method for changing surface features of a metal workpiece. An electrically conductive workpiece is immersed in a bath containing an electrolyte solution devoid of ions corresponding to the workpiece. A counter electrode is immersed in the bath. An electric power supply is connected to the workpiece and the counter electrode. An electric current is passed in a first direction between the workpiece and the counter electrode, while the workpiece serves as an anode. The electric current polarity is reversed to pass the electric current in a second direction between the metallic workpiece and the electrode, while the workpiece serves as a cathode. The electric current polarity in the first direction drives ions from the workpiece into the electrolyte solution, and the electric current polarity in the second direction plates the ions onto the workpiece in the same bath.

Abstract: A vehicle includes a sidewall, a first door moveable between an opened position and a closed position, a second door moveable between an opened position and a closed position, a first track secured to the sidewall and a second track secured to the sidewall. A first roller is connected to the first door and is moveable along the first track as the first door moves between the opened position and the closed position. A second roller is connected to the second door and is movable along the second track to the first track and along the first track to the second track as the second door is moved between the opened position and the closed position.