[shovel]

I can 'buy' that as a semi-universal stick-on, one might see benefit from a zigzag at the trailing edge of necessarily truncated foils intended to invoke flow separation - like deck extension spoilers or kammbacks or side mirrors. I can also accept that under the right conditions and with exactly correct placement these gaspods can reduce drag by a tiny percent. Like many unicorns (in any industry, not only ecomodding), there's an element of plausibility if every condition is met exactly right and if a problem actually exists to address in the first place. I find it unlikely an average user can expect meaningful improvements from arbitrary placement - but I guess if it makes them feel good or if the presence of the bumps provoke conversation or thoughts about energy consumption, that can be a useful effect.

Still seems like the sort of thing the corral was meant for, unicorns are always free to grow wings and fly outta' there if they're strong enough.