This imposter is an assassin, in the James Bond film The Living Daylights, disguised as a 00 agent who kills agent 004 during a training mission at the Rock of Gibraltar, leaving only a tag that said “Smert Shpionam”.
Afterwards, he kills two British guards and steals a Land Rover loaded with ammunition and attempts to escape, but Bond pursues him and jumps onto the top of the vehicle, using his knife to cut through the Land Rover’s cloth top. As Bond forces his way inside the vehicle and the two men fight for control of the steering wheel, they inadvertently smash through a military blockade.
In retaliation one of the guards fires on them with a machine gun, setting fire to the ammunition the Land Rover is carrying in the back. Ultimately the vehicle drives off a cliff. Bond escapes by kicking out the windshield, using his parachute to let the updraft pull him safely from the falling Land Rover; the assassin is not so lucky and dies when the ammo finally explodes as the vehicle hits the water.