Another terrible, fatal accident on the 10, between Phoenix and Tucson involving a motorhome and many others; please be careful! /www.theepochtimes.com/n3/334761-i-10-crashes-3-dead-12-injured-afte...
When you do get off the road I should think the engine should be turned off to prevent damage from the dust or at best a clogged air filter. The big killers here in Northern New England would be fog or "black ice".