I-5, just down the hill from our place:
I wouldn't try getting into an auto repair shop anytime soon around here - in the past month there have been over 800 wrecks around Portland due to people trying to drive in heavy snow and ice. In this particular event, which occurred around 3 a.m. a few blocks downhill from our place, the freeway was coated in a nice thick layer of freezing rain. The very top of the mountain generally insulates us from traffic noise, but the thumping and banging was audible.
Oddly enough, despite all of the damage, there were no serious injuries - but a lot of really banged-up cars and trucks.
As might be expected, things were no better out on I-84 in the Columbia River Gorge. This is why we have chains for our cars, and why we install them in our driveway. Looking at the KOIN image above, I don't see any chains on what's left of that front-wheel drive car.
Oregon and Portland don't believe in road maintenance, so you're going to be on your own here.