Commenting on the most random thing right now and will be back with thoughts on the episode later. š
The road shots are for ads, not transitions. They have started using road shots to show billboards with ads of the sponsors. However, a lot of times the sponsors are only paying for one medium, TV, and so when the episodes are uploaded online, the ads are taken off and it looks like a random road shot. It's easier to take off the ad than the entire road clip, so they let it be there.
I haven't watched episodes on TV in forever, but this is something that I've gathered from some other shows where I've seen ads in the online versions of the episodes as well.