WHY NOT? asks father, a heretofore unsuccessful inventor, as bulbs light up, gears grind and IDEAs pepper the primary-colored page. And so in funny-paper pictures and hand-lettered text he scavenges in dumps and junkyards, strips the house, and constructs from old sails, weather balloons, car bodies, a washing machine motor, and four tanks of helium -- ""along with all manner of gauges, dials and faucets"" -- his CLEAN AIR AND PEACEFUL CONTENTMENT DIRIGIBLE AIRPLANE. After a preliminary mishap (HISSSS RRRRIP CRASH) his maiden voyage is so successful that he sets up a regular commuting schedule. Soon rich and famous, he persuades the now depressed airplane companies to make small family dirigibles to replace the family car: ""It's only my father's dream but wouldn't it be nice?"" Nice maybe, if your wish for clean air is mixed with a tolerance for unadulterated pop, but it's far more of a trip with Koren (see above) Behind the Wheel.