Well ...

No play, no obvious damage. I took the SVX in to my dealership. They did a more extensive visual inspection, rebalanced the front tires and checked the alignment (weight on and off wheels) ... nothing found. We did a road test, but freeway traffic was far too heavy to get up any speed.

To recap: at high speed, when driving over irregular surfaces, and especially when negotiating a turn, there is a strong left-right vibration throughout the car, particularly through the steering wheel.

Unless I'm imagining it.

My wife drove it and said, "Hmm. There could be something wrong ...."

Any locals want to drive this car to make sure it's all in my head?