We've tested such devices over the years and have repeated ... To learn more about saving fuel, see our guide to fuel economy.

Elon Musk, known for leading companies like Tesla, SpaceX, Neuralink and X.AI and buying and rebranding Twitter as X, often ...

If you drive a lot, you may want to consider paying for a gas app that will save you money. There are other ways to save on gas than buying cheap fuel; turning down the air-conditioning and ...

Six aircraft have been modified for a six-month evaluation before the microvanes, small 3D-printed devices similar to thin blades, are installed across ...