Thanks for posting this. It has a good summary of the work we've seen from NASA Dryden and Georgia Tech. I'm especially interested in the variety of Coanda nozzles shown. And the grooves are something new to me.
One of the hardest parts of deciding to go electric with my next vehicle is giving up the 1500 cubic feet per minute of hot, pumped air that air-cooled VWs produce right where it is needed. Here's an example where Coanda nozzles are used to virtually truncate a boattail (the one on the left):
