Diesel exhaust harmful to human arteries?

Are the fumes put out by 18-wheelers dangerous? Along with those large vehicles and regular diesel trucks and cars, the fumes sent out of all those exhaust pipes could be causing damage to the arteries of people regularly exposed to them.

A new study out of UCLA reports that the ultra-small particles from diesel fumes combine with "bad" cholesterol inside the human body that can result in blood vessel inflammation.

Ultimately, this could lead to complete vessel blockage, causing various cardiovascular detriments. And we thought fuel fumes were just bad for the environment; guess not.