Two people, Kandice and Mark, explain why they are building a home out of reclaimed materials in the middle of a ramp on the I-5 in Seattle.

Many motorists are clogging their car's engine by not using gasoline with enough added detergents.That's the conclusion of a study released Thursday by the AAA auto club.Federal rules in place since 1996 require all gasoline to have some engine-cleaning ad...

Volkswagen's plan to fix most of its 2-liter diesel engines that cheat on emissions tests includes a computer software update and a larger catalytic converter to trap harmful nitrogen oxide, and it may not hurt mileage or performance, according to...

The Tesla Model S electric car has been offered in several versions over its five model years to date, with faster and longer-range variants getting the most attention.Today the Silicon Valley carmaker announced two new, less expensive versions of the...