[aerohead]

The drag reduction due to blown or suctioned wing slots in regards to STOL aircraft has been well understood,however the energy tradeoff always shadows the process.
J.J.Cornish III,chief engineer for Lockheed,and member of the American Institute of Aeronautics and Astronautics believed that suction slots could be employed for road vehicle drag reduction.
Dozens and dozens of researchers have attempted and failed to pull it off.So far,the energy required for the pump exceeds the power saved from the drag reduction,for a net energy loss.Every time.