According to KOMO News, the spider was hitching a ride in a local woman's Toyota Camry through the Bonny Slope area of Northwest Portland. Around the intersection of NW Thompson and McDaniel Roads, the spider dropped down from her perch behind the Camry's rearview mirror and startled the driver so much that she lost control of the Camry, drove off the road, and rolled into a ditch.
Washington County Sheriff deputies arrived on the scene soon thereafter and found the Camry on its side in the ditch with the stunned driver still inside. Deputies reduced the road to one lane for a bit while they pulled the totaled Toyota out of the ditch and administered first aid to the driver. Thankfully, the driver was mostly unharmed and suffered only a minor scratch on her hand.
The condition and whereabouts of the spider are currently unknown, but after this incident she'll probably think twice about riding in cars with humans again.