I don't know...I'm no Photoshop expert...and there are certainly MANY who are better than I at it (I have a hard time with the red eye thingie..perhaps I should get the full version someday) but...
I do have a bit of knowlege on perspective and such...
the arm looks wrong because of the angle of the photog and the angle of the bike in relation to the photog...the bars have a slight V shape which is consistent and un-flawed the light reflection in those bars is spot on for their position at all locations...the reflection between the bars on the SUV window is of the upper trees on the side of the road as it should be...the fender curves away (and has already been pointed out) the only area that even remotely looks "cloned" is the very end of the tastles on the left hand side...and having spent such a huge ammount of time to get the minutest detail possible correct in all other areas just to rush the final bit seems, a bit insane to me...
