Basically it was huge middle finger to the art world at that time. Which is basically what every great artists does. They take the status quo and make something uniquely familiar but different enough that know one can quite copy it within the bound of that periods art.
Warhol was one of the first artists to really incorporate and popularize pop culture into the art world. He was overtly commercial and money oriented, and making commercial success out of the icons of commercial success leaves the audience wondering whether he is lazy, a thief, a genius, a critic of pop-culture or an opportunist.
/u/hypergnostic + /u/superfudging
Actually, it is possible to travel into the future. Of course, we’re all moving into the future at the “regular” speed. But if you want to move into the future at a rate faster than everyone else, you simply need to move (physically) very, very quickly. Because of the time-dilating effects of Relativity, the faster you move, the slower time will flow for you. Moving sufficiently quickly would allow you to travel hundreds or even thousands of years in the future (while you remain young).
However, taking this concept of time dilation to its logical conclusion, if you were to travel at the speed of light, time would stop. And, if you were to travel faster than light, you would travel backwards through time. That’s not possible though because (again, due to the effects of Relativity) as you approached the speed of light, your mass would approach infinity which would require an infinite force. An infinite force cannot exist. So, as far as we can tell, you’re stuck moving forwards through time.