As London prepared to go ‘into darkness’ for WWF’s Earth Hour, Paramount Pictures pulled off an amazing light show to promote Star Trek Into Darkness:
“This amazing light show by Paramount, in conjunction with Ars Electonica Futurelab & Ascending Technologies, will see quadrocopters fly into the night sky, forming the Star Trek federation logo beside Tower Bridge on a scale never seen before. In keeping with Earth Hour’s initiative, the quadrocopters will utilize batteries that were charged in Austria using green energy from the Austrian renewable energy grid specifically for this event. “
I don’t think the footage did it justice but see for yourself.