Phineas and Ferb Episode 3.03 Run, Candace, Run

Candace finds herself needing to be at two places at once when she promised her mom she would read to children at the local library, but also said she would be at Jeremy's family picnic. She gets lucky when her brothers invent boots that can make her run fast. But unfortunately, she took the unstable prototypes that make her run awry all over Danville. Meanwhile, a financially-strapped Doofenshmirtz tries to convince prospective buyers that his building isn't worth purchasing.