This is the only regular episode that is in black and white. For the most part, the animators try to avoid these colors (with a few exceptions, such as eyes, teeth, milk, snow, etc.). These colors were also used exclusively in the irregular episode Dino-Sore Days. This episode also contains red (blood), greenish-yellow (Evil Flippy's eye color), and pink (organs, guts and brains).
This was the first regular episode where Flippy did not flip out (although he did in Flaky's imagination, but there was no reason for him to flip out there). Arguably, he didn't flip out in Happy Trails Pt. 2: Jumping the Shark, either.
It had been speculated that since Flaky survived Double Whammy Part I, it's possible that she remembered Flippy's murders in that episode, thus explaining her phobia. However, it remains unknown if she is truly aware of the difference between Flippy and Fliqpy and that Fliqpy will only appear if he is reminded of war or perhaps Flaky is scared entirely of Flippy.
However, it was confirmed on November 20th 2015 that the episodes are not connected in any conscious way.
It was also confirmed that Flippy has no clear trigger, justifying Flaky's fear.
This is the first internet season 3 episode Flippy appears in.
Strangely enough despite the entire episode taking place outside, on a highway, there are no trees in this episode.
This can be proven when Fliqpy is approaching Flaky during the storm. When the lightning strikes, there are, indeed, no trees.
'Without a hitch' means that there are no problems.
The moral means that promises and plans must be put into action, or else they are useless.
Fliqpy injuring Flaky with a lug wrench may be a reference to Sorority Row.
The story of this episode is quite similar to the urban legend of "The Barbed Autostoppist".