profit consulting company Phoenix iMarkets compiled from ZeroHedge, according to government data compiled by Labyrinth consulting services, the growth trend of U.S. personal vehicle mileage (VMT) has been steady since June 2017. The possibility of a halt to growth in U.S. personal vehicle miles (VMT) has been around since the start of 2014, which could signal a slowdown in crude oil consumption. Now, however, that wisdom is being questioned, not just in Britain. As long as inflation is a real and present danger, it makes sense to put monetary policy down to the conservative central bankers and keep them from the government's fiscal deficit. Instead, the problem today is the opposite: that the central bank cannot raise inflation to its target. New standards to abolish the "cars" and called the name of the "passenger", is considered to be the of the traditional concept of change, it will change the traditional concept cars as the thought of luxury goods, return to the main is a concept of transport Mehrotra said the additional rate for PC flash drives in 2017 is about 35 percent, and will increase to 75 percent by 2020. And "a lot of hard drives still need to be replaced by SSDS... Future self-driving vehicles are expected to be equipped with about 40GB of DRAM... This will also drive the use of NAND flash memory." The investment quantity is the decreasing function of interest rate, saving is the increment function of interest rate, and the change of interest rate depends on the equilibrium point of investment quantity and saving amount. Keynes's theory of money supply and demand decided that interest rates were a monetary factor rather than an actual factor.