I have seen some people complaining about both the length and the shape of this cable, and I think those complaints are perhaps unfair.
To be clear, this cable hasn't been designed for you to plug your iPod into your car stereo, even though some people use it for that purpose. Fiio designed this cable to be used to link the dock port on the iPod to an external headphone amplifier and/or DAC, and that is specifically why the cable is moulded in a 'U' shape and why it is so short, so that you can put your mp3 player back to back (or side by side) with your external/portable amp/DAC, and link the two together.
When used for the purpose for which it is intended, the cable does a great job, taking advantage of the iPod's line out function through the dock port. The cable quality is good, does exactly what it is supposed to do, and is also cheap.
Buy this with confidence, just don't complain that it is too short or the wrong shape to plug into your car stereo. That's not actually what it was designed for :-)