They used ionized gas at temperatures above 20 thousand degrees Celsius. To make the device portable, craftsmen assembled a battery of twelve lithium-polymer batteries that gave direct current. They connected a retractable cutter mounted in a glove. For the ground electrode used another glove.
The cutter can work on metal up to several centimeters thick. Enthusiasts, for example, cut a steel door and a safe.
The device, of course, needs to be recharged. One charge is enough to cut the car into parts. Refueling with compressed air is also required. The main tank lasts about 10 minutes.