Air also is another significant source of noise. Less aerodynamic trucks tend to have louder noise levels than aerodynamic ...

The company is conducting a test run of a small squad of self-driving cabs in Austin, Texas, that began Sunday.

The electric-vehicle company began a test run on Sunday of a small squad of self-driving cabs in Austin, Texas. It’s something that Musk has long been touting and integral to Tesla’s stock ...