Add Yahoo as a preferred source to see more of our stories on Google. Airtabs are wishbone-shaped vortex generators often seen on the roof and on the rear of tractor trailers, trucks, vans, and RVs.

Airtabs are wishbone-shaped vortex generators often seen on the roof and on the rear of tractor trailers, trucks, vans, and RVs. They may look small and somewhat trivial, but Airtabs are neatly ...