What?
It's been alleged that the dude used an exit ramp to get on the highway, to avoid the blocked onramps. So he had some idea that the highway was blocked off. With cars parked sideways on the highway, anyone in their right mind would at least use caution and slow down to get on the shoulder lane and drive around. The dude slowed down enough to swerve, but accelerated as soon as he got passed the van. He didn't take any cautious measures, and looking at the video, there is plenty of time for him to slow down. It's around a very wide curve, and I'm assuming he could see the cars from probably a quarter mile back. It doesn't take a quarter mile to stop a car.