Looks like searches for Trek bikes ebb and flow with the Tour, but there is a general upward trend. Other bike manufacturers also have such spikes, but not as big, except Huffy.
Generally, searches for bikes are going up, with the exception of Litespeed -- that's been going down slightly over the past 2 years. The biggest gain is Trek (and also Giant). Cervelo also has some healthy gains. Colnago is pretty stagnant. Huffy is stagnant too.
And, to put the Shimano/Campy debate to rest: