We have had a number of SL employees as well as other industry professionals on here in the past - Colin Berry, Karl Jones, Nick Burcombe, Damon Fairclough, Paul Tweedle, Ami Nakajima, Jon Eggleton... and probably a couple of others I've forgotten
The trophy was set up as an in-house competition as to who could do the best lap on Anulpha Pass. The winner would have their acievement recognised as a gold trophy in the game with their face as the symbol. Zico came out on top, and it was a beast of a time. So much so that the 2048 version was deliberately made easier
I have met Zico in person actually, there's a picture floating around on the forum somewhere that Karl took when I went up to Sawfly at the end of 2012. He's very shy, but he did confirm to me that his time was done using only three barrel rolls. I'm also in contact with a few others as well. I do occasionally meet up with Karl and Ami whenever I can get up to Liverpool or they can get down to Eurogamer, also met up with Nick Burcombe last time I was there. I sometimes chat with Colin, Lee Carus and Stuart Lovegrove on Twitter too.