Save fuel with the window trick? Here’s what this foolproof technique is that can save you money!

Fuel savings are a goal we all aspire to, given the exorbitant costs involved.

For this reason, it is good to know some tips to save on consumption and spend less. A very effective but little-known trick is that of windows, which apparently saves fuel and therefore a lot of money. But what is it made of? Here’s everything you need to know about the window trick.