If you want to impress people with video game graphics, one of the best ways to do that is with cars. Look no further than the likes of "Gran Turismo" and "Forza Motorsport" for representative examples – not only are these games full of "car porn" for car enthusiasts, but also some of the prettiest graphics you'll see in any game.
Such is also the case with the trailer above for "CSR2." The difference in this case, of course, is that "CSR2" is running on an iPhone 6, with graphics that look straight out of a home game console. This is apparently the magic of Apple's "Metal" game engine, which enables developers to squeeze as much horsepower as possible out of the iPhone 6's A8 processor.