Eco-Cooler energy free air-conditioner enhancement.
These bottle and jug top venturis economically and with environmental safety reduce ambient air temperatures up to 9 degrees as wind blows through them.
If you nested two of the bottles together in series -- as you nest cups or tubs or chairs
-- the temperatures may be reduced up to 18 degrees? Stack three bottles together and... well you get the idea. I wish I were in a position to test this.
The venturi effect can reduce temperatures up to 70 degrees in a carburetor and cause icing
Stacked venturis hidden under the frame would be great for vehicles. Compressed air air-conditioning has been tried in vehicles in the past but the moving air was too noisy.
Today we have active noise cancellation technology to counter the noise problem 
The auto Eco-cooler could be powered by air exiting the turbocharger blow off valve and then passed through the intercooler.
Or the compressed air could come from a larger turbo lag reducing storage tank that Volvo has produced