This. I'm gonna do this.I don't actually own an ILX, but I live in Corvallis. However, might I suggest driving up the old Columbia Gorge highway past Crown Point ending at Multnomah Falls? You could then come back on 84 to do some higher speed driving to mix things up.
This would be especially good when the snow in the mountains starts to melt and feed all the dozen small waterfalls along the way! Make sure you take some photos of your ILX in front of some badass waterfalls