The key factor to a diffuser's function relies on the manipulation of air pressure. Air passing under the car is subjected to a phenomenon called the Venturi effect. In short, this happens when ...

Car essential-oil diffuser price The best car essential-oil diffuser will cost $13-$25. The price will vary depending on the item’s features, additions and make.

The diffuser is a chunk of bodywork low on a car’s rear end, usually shaped to manage airflow, improve aerodynamics, and—let’s be honest—look bitchin’. Bugatti’s new Tourbillon super ...