GRANDVILLE, Mich. (WOOD) — A dwindling number of truckers is driving up costs for many retailers, but local driving schools aren't sweating it right now. This weekend, Fortune magazine reported that the shortage is affecting everything from Amazon to McDonald's and cat litter to toothpaste. "The demand has really skyrocketed," said Mike Birdsall, president of West Michigan CDL, a truck driver training school in Grandville. "It's not unheard of for people to have multiple job offers before they start their first day here." Demand may be up, but enrollment is not. Birdsall explained that lower enrollment is partially because there haven't been many big layoffs or company closures. That's when his school usually sees an influx of jobseekers.