He is limited by the terrain of the Olympic park, but Tilke looks like he designed a bit of a dud track. The semi-circle curve around the Olympic flame could have been an immense corner, reminiscent of the parabolica at Monza, with loads of drivers trying to go right round the outside to get the inside of the 90 degree corner following, but the issue is that there is a 90 degree corner into that curve as well. It needs a straight run up to make the curve work. As it is, it is dull, dull, dull.