LOS ANGELES — In the pantheon of parade float achievement, world-record titles are coveted. The longest parade float, a paper dragon in Gutian, China, spanned a half-mile in 2012. The heaviest, dubbed the "Gnarly Crankin' K9 Wave Maker," was an actual swimming pool on wheels that weighed in at nearly 150,000 pounds. Faced with some stiff competition, one savvy float-building team at this ...