微软水军火力全开 可惜TGFC早就有这个贴
http://club.tgfcer.com/thread-7375364-1-1.html
现在楼主看起来就和傻子一样

"In a narrow sense, the part that was the GT Mode in the past is now called Mission Challenge,” he said. “It’s single player, there are various different types of races, from the very short to the very long, with different regulations, and you can tune up the cars that you purchased to participate in those races."

"Twenty years ago, when we did the first Gran Turismo, people knew what happens when you change an air filter; people knew what increased compression ratios do to your car. But the new users don’t have that knowledge anymore because they’re not as interested in the cars, so we’ve simplified that area [of the game] so you can do the exact same thing you were doing in the past, but it’s more user-friendly for people just getting into cars.”