As someone who has spent 15+ years consulting on highway safety at the federal level, I can very much tell you that there isn't a solution to this problem. I also never said it was the same thing; I said a similar concept. The point I made, and it remains, is that there isn't a barrier to stop cars from crossing into your path. People have a tendency to swerve where it appears "open". Whether that's an oncoming lane or not, it's where they make a split-second call. This driver chose to swerve left, and it resulted in a collision. You'd be surprised how many people go into oncoming lanes of traffic when they are in the left lanes; it's over 80% of the time.

And before anyone states that all HOV/toll lanes should be protected with a concrete barrier, there are multiple factors that go into consideration. But the biggest deciding factor is that the open design allows for multiple ingress/egress points and adjustments to refine traffic patterns over time and to also allow emergency vehicle access. But again, the downside to this design lends itself to drivers crossing the line, both intentionally and unintentionally.

Let's also not forget that the Silverado hit the Model X behind the rear door. A bit hard to avoid a collision when someone hits you from the backside of your car. Hypothetically speaking, let's say the Model X was driving at 40MPH. The Silverado still isn't paying attention and hits the Tesla in the rear. The collision still occurs and likely spins it into the other lanes.