Has anybody heard of rainbow chard?" Larry Moore asked a group of elementary school children. No one answered. "What about this?" Moore asked again, pointing to green leaves emerging from the dirt, their orange base peeking through the brown soil. "That's a carrot!" several young voices called out. But this carrot wasn't growing in the ground or a pot. It was growing in the bed of a red pickup truck, a garden on wheels known as the Louisville Truck Farm. "With this, our primary audience is kids, but I'm always in awe at how amazed adults are when they see vegetables growing in the bed of a truck," said Moore, one of the educators who takes Truck Farm into the community. For the past year, the 1995 Chevrolet truck has traveled more than 450 miles to visit farmers markets, schools, and community events around Louisville, Kentucky, to show that it's possible to start a garden anywhere, even in an urban environment. In the warmer months, the truck boasts as many as 40 different plants in its bed so that visitors can experience a variety of sights, smells, and tastes. The truck bed ... opens to reveal a plexiglass tailgate, which allows people to get a visual of what's going on beneath the soil.