According to foreign media reports, the concourse of elegance held in Hampton palace is an extraordinary event, which integrates the upper class society with various charming automobile machinery. But in the more than a century of automobile history, there is a machine that is difficult to draw people’s attention away from it. This is a 1921 leyat helica, which Marcel leyat, a Frenchman, once built, and only 23 were reported to have been sold. < p > < p > before the outbreak of World War I, leyat was a biplane designer, but he later turned to automotive design because he felt that there was one or two things the aviation industry had to teach automotive designers. < / P > < p > first of all, he believes that early car design was too heavy and aerodynamic efficiency was low, which the aviation industry has been trying to solve. Secondly, he thinks that the driving wheel is another unnecessary and complicated work that consumes power. It needs gearbox, clutch, transmission shaft, differential and other various parts. < / P > < p > on the other hand, aircraft have been designed from the start to be aerodynamic and lightweight, and the propeller can be more or less directly mounted on the engine crankshaft. < p > < p > when leyat built his first helica in 1913, horsepower was a scarce resource. The car used an 18 HP, 1000cc Harley Davidson V-twin engine. His goal is to get power from power in the most efficient way possible. He did a good job in this, and then helica recorded a top speed of 106 mph (171 kph) in 1927, which was a terrible speed at that time. < / P > < p > in other ways, leyat’s propeller car and several other similar designs were a bad idea from the beginning, because they had huge propellers in the front. This kind of design may let the lost pedestrians and wayward pigeons finally pass through the mixer with several thousand rpm, and the bloody picture behind can be imagined. < / P > < p > more importantly, in the event of a rear end collision, the rotating mass of the wooden pillar will become a high-energy air shrapnel constellation. When the car does not explode in the accident, it will block the driver’s line of sight, and the high-speed wind will blow directly to his face, thus increasing the possibility of accidents. In addition, leyat has adopted an aircraft inspired steering system, which avoids complicated Bogies and adopts a very simple cable operated rear wheel steering system, which can turn the rear end of the car to one side. It is said that “gta5” will be launched on Google cloud game platform stadia