Russian troops riding on rusty motorbikes and on the roofs of battered cars stormed the fog-covered Ukrainian city of Pokrovsk on Tuesday — in a scene straight out of the post-apocalyptic “Mad Max” movie franchise, shocking video shows. Footage from Russian war bloggers shows the reinforcements being sent to Pokrovsk, a logistical hub in eastern Ukraine that has been a target for 21 months, with the troops looking less like soldiers and more like marauders from George Miller’s 1979 dystopian