However, the destruction of Jellyfish Fields would prove to be Plankton's downfall. Moments after Mr. Krabs was finally preparing to hand over the Krabby Patty Formula to his nemesis, Bikini Bottom was invaded by hordes of jellyfish aggressively seeking a new home. Realizing that the creatures would only stop their attack if Jellyfish Fields was restored, the citizens of Bikini Bottom aided SpongeBob in destroying Plankton's highway.
It is unknown who the Shelly Superhighway is named after, although it could be named after seashells.
Another possibility is that Plankton used the name "Shelly" to hide his identity so people will approve of the highway; a plan that succeeded in tricking even Mr. Krabs.
The name "Shelly" could also reference Plankton's first name, "Sheldon".
The Shelly Superhighway seems to always end or start at the Chum Bucket. This was part of Plankton's plan, as the highway was also meant to draw away the Krusty Krab's business to his own establishment
Aside from his scheme in The SpongeBob SquarePants Movie, the Shelly Superhighway may be one of Plankton's greatest plans yet, as he actually managed to force Mr. Krabs to admit defeat and prepare to hand over the Krabby Patty Formula. The plan was only thwarted by the Jellyfish invasion of Bikini Bottom, which provided the people with an incentive to help SpongeBob destroy the highway and restore Jellyfish Fields.
Squidward is the only one of the main cast that isn't involved in the destruction of the Shelly Superhighway.
Shelly Superhighway is also a parody of the Sunrise Highway.