Tao Xiangli gets out of his homemade submarine after operating it in a lake on the outskirts of Beijing September 3, 2009. Amateur inventor Tao, 34, made a fully functional submarine, which has a periscope, depth control tanks, electric motors, manometer, and two propellers, from old oil barrels and tools which he bought at a second-hand market. He took 2 years to invent and test the submarine which costs 30,000 yuan ($4,385). (Photo by Christina Hu/Reuters)

In this October 21, 2015, file photo, a young man rides a hoverboard along a Manhattan street toward the Empire State Building in New York. More than 500,000 hoverboards are being recalled after reports that they can burst into flames. The Consumer Product Safety Commission said Wednesday, July 6, 2016, it has received 99 reports of battery packs in the two-wheel motorized scooters catching fire or exploding that causing burns or property damage. The recalled hoverboards were made by eight companies. (Photo by Kathy Willens/AP Photo)

People visit the autonomous urban concept car Renault EZ-GO during the first press day of the Geneva International Motor Show on March 6, 2018 in Geneva. The show opens to the public on March 8 and runs through March 18. (Photo by Fabrice Coffrini/AFP Photo)

Women take pictures by a vintage car during the 2019 GUM Motor Rally featuring classic cars in Moscow, Russia on July 28, 2019. The youngest car at this year’s rally is 35, the oldest – a GAZ-A convertible – is 85. (Photo by Artyom Geodakyan/TASS via Getty Images)

Michael Read, director of Flight Operations from New Zealand-based Martin Aircraft Company, flies a Martin Jetpack during a demonstration at a water park in Shenzhen, China December 6, 2015. KuangChi Science Ltd, a Hong Kong-listed Chinese company and investor of Martin Aircraft, will sell the flying machine in mainland China for 1.6 million yuan ($249,902), according to the company. (Photo by Bobby Yip/Reuters)

An employee of Daikin Industries Ltd works the production line of outdoor air conditioning units at the company's Kusatsu factory in Shiga prefecture, western Japan March 20, 2015. As Japan heads into the season of peak demand for room air-conditioners, Daikin managers have been tasked with figuring out how to boost output by some 20 percent at the 45-year-old Kusatsu plant that six years ago the company had almost given up on as unprofitable. (Photo by Yuya Shino/Reuters)

These are incredible pictures of skilled aircraft pilots flying through raging infernos to put out enormous flames. Daredevil Italian photographer Antonio Grambone, 46, jumped up close to the blaze to capture the incredible images of forest fires in the National Park of Cilento and Vallo di Diano, in the province of Salerno in Italy. At great risk to himself, Antonio captured these incredible shots making them appear like Italian masterpieces.

Photo: On target: Brave pilots are on a course straight into these enormous flames as they release tonnes of water onto the fire. (Photo by Antonio Grambone/Caters News Agency Ltd)

A model of a ghost made from translucent fibreglass is lit from inside at Gem's (Wax Models) Ltd, in the Portobello Road area of west London. The ghost is due to go to the Capistrano Mission Museum in California, where tourists are told the legend of how he frightened a young Indian girl novice to death. 1st May 1965. (Photo by Chris Ware/Keystone Features)