I didn't say tail wind, I said no wind, and I didn't say overinflated tires, I said properly inflated tires. i.e controlled conditions.
And if you think vehicle emissions/fuel economy testing isn't done under controlled test conditions, you are living in a dream world bro.
From the EPA web site:
Certification Emission Test Data
All new cars and trucks sold in the U.S. must be certified to meet federal emission standards. This is accomplished by performing laboratory tests on pre-production vehicles. Most testing is performed by manufacturers at their own facilities. EPA audits the data from this testing and performs its own testing on some of these vehicles to confirm the manufacturers' results. All of this test data is available to the public for review and analysis.
Note that it says laboratory tests, and at the manufactures "own facilities". That isn't real world testing.
The EPA performs independent testing on some vehicles. Admittedly, I don't know if EPA testing is done real world, or in an independent test facility.
Concept is exactly the same. Real world performance may not equal performance under controlled test conditions, and manufactures are going to accentuate positive data to sell their products.
We as consumers have the choice not to purchase if we feel the manufacture is in any way misleading or unethical, or if we feel the quality of the product is sub standard. We can also file complaints with various consumer advocacy groups should we choose to do so.
I don't have any hands on with PB, but I agree with you, my AQ products have proven to be excellent.
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