The first wedge-shaped car was made in 1963, and the car was highly regarded as an expert in car shape design. In 1968, gm's Ozzie toronado improved and developed the wedge-shaped car, and in 1968, it was adopted by the Cadillac premium sedan, eldo. Wedges are widely used in racing cars. Because the car first considers the influence of fluid mechanics (aerodynamics) and other issues on the automobile, the body can be made entirely by wedge, while the ride comfort is considered as a secondary consideration. Like the Italian ferrari in the 1980s, it was a typical wedge shape. Wedge shape for currently considering the high-speed car, whether from the aspects of its modelling concise, move feeling, or from its embodiment of aerodynamics, are conform to the requirements of the modern people's subjective, with a strong contemporary breath, give a person with beautiful enjoyment and speed fast. Japan's Toyota motor co., the MR2, is an engine sports car (the tail is fitted with a flexible flow board) that can be called a car in a wedge car. According to this model, the interest rate decision depends on the supply of savings and investment needs, money supply, money demand, four factors, cause a change in the saving investment, money supply and demand factors will affect the level of interest rates. This theory is characterized by general equilibrium analysis. For many, the first benefit of entering the blockchain and cryptocurrency world could be economic gain. Listed in just three days later, the stock has jumped 2000%, on December 18, only half a day, that day rose more than 400%, volume of more than 5 million shares, accounting for half of the total outstanding shares, by two days in a row, its market value has reached $5 billion, due to the large period of time to rise too fast, Long Fin trigger circuit breakers exchanges for many times. Marvin Loh, senior fixed income strategist at BNY Mellon, Before the law came into force, start-ups could only raise money from qualified investors, and everyone was eligible to become a start-up investor after the jobs bill came into force.