Here is my latest dashcam timelapse from May 15, 2015 in western Nebraska, the only time during my second Plains trip this year when I encountered other chasers. It starts on Highway 385 just east of Sidney, NE. No problems aside from a slow-moving car (that may or may not have been a chaser at 4:00 in the video) south of Bridgeport that took a long time before I could pass. The TIV/Doghouse passed me in low-visibility heavy rain north of Bridgeport at 5:00 in this clip. I couldn't go faster than 60 because there was standing water on the road (I do have new tires on my car).
I nearly got mired on muddy roads north of Sidney. They were gravel, but slowly turned into a gravel/mud muck about two miles in. I didn't get stuck because the gravel provided enough traction to keep moving. I saw only one other chaser on this road, who had to go around me (at around 2:45 in the clip) with their 4WD because I could not pull all the way to the side in my car.
From 10:00 onward, I was on a very remote rural road north of Lakeside, Nebraska. There were very few pull-offs available. I stopped several times when there were no cars approaching to check the wind speed/direction, to ensure I was not driving into a dangerous area of circulation within the storm. There were many areas of circulations occluded within the RFD, one of which produced a brief tornado during this sequence (out of view to the left).
There are a couple of jump cuts due to me power cycling my router to regain an internet connection. To do this, I have to turn the main 12v accessory circuit off, hold for about 20 seconds, then turn it back on. This also power cycles the dashcams, causing a gap in the recorded footage. These jump cuts account for about 20 to 30 seconds of missing footage when they happen. By referencing the gaps, one should be able to deduce that nothing of importance has been missed.
For these, I just drag-and-drop the dashcam files into the Premiere timeline, choose a speed value of between 2000%-3000% with the "Ripple edit:shift trailing clips" checkbox selected, and start the render before I go to bed. It takes 5 minutes of work to do in Premiere, then I let the render go overnight. The render out of 7 hours of footage into a roughly 15 minute timelapse takes about 4 hours to complete (according to the progress bar when I start the render). I upload the clip to Youtube when I wake up in the morning.