When the mathematicians amongst the game's fans first brought out the calculators, it was determined that it would actually take several years before Mars would be reached. Apparently, Namco multiplied player's submitted lengths by 765, speeding up the process. Essentially, it cheated, though undeniably in a good way.
This, however, raises a good point: the next few planets are going to have an even greater distance between them. Does this mean we're going to see more multipliers? Can we expect to see a "double XP weekend," sort of deal? Or should Namco rearrange its measuring system or modify the gameplay?