(Squatting) Jon Travis (cq) and (R)Alfredo Tapia take a look at the bus stop before their bus arrives.

CHRISTINA KOCI HERNANDEZ/CHRONICLE (Squatting) Jon Travis (cq) and (R)Alfredo Tapia take a look at the bus stop before their bus arrives.sf zoo's new bus shelter ad campaign debuts. it's a first of its kinds: a 3-dimensional display called "insects" that shows 30 different kinds of real bugs, such as the rhinoceros beetle, giant walking stick and butterflies. can be easily seen from a distance before viewer realizes they're real bugs. Ran on: 07-02-2005 Jon Travis (left) and Alfredo Tapia inspect a display of insects installed by the S.F. Zoo at a bus shelter near the Civic Center. (Photo By Christina Koci Hernandez/San Francisco Chronicle by Getty Images)