Efficient diesel electric technology has been in use in railroad locomotives for years, so why hasn't it caught on in the ...

After more than a year and 200,000 km of real-world driving, real-world test of electric semi trucks showed huge savings.

"One more advantage for electric cars!" California officials share clip of Tesla Semi in action on closed icy road: 'These trucks are the real thing' first appeared on The Cool Down.

The sight of a semi-truck in your rear-view mirror is an imposing one for an American driver. That big, long hood is typically accented with a bold grille, sometimes clad in chrome, and the image is ...