They tell legends of the Scootaloo Track.

Scootaloo: first mare to circumnavigate the globe. On a scooter.

She scooted until the scooter broke down; checkpoint unicorns repaired it. When the scooter finally shattered, breaking her leg, she moaned and whined but got up and limped the last few yards.

So close. Most ponies clapped politely. One cheered.

Not a good enough dream. Scootaloo negotiated with actual dream-keepers: she’d become the first pony to drive from one side of the dreamworld to the other.

No one heard anything for days.

Then weeks. Then months.

Some ponies searched the dreams. Most reckoned she’d gotten lost in a nightmare. Gave up on her.

Except one.

That one was waiting for her at the finish when Scootaloo reappeared. Broken leg. Moaning. Whining. Limping. But still going.

Thereafter, they built a road between dreams. Called it the Scootaloo Track. Made it out of a rainbow.