Eli Lilly stock may look expensive, but that may not be the case in a few years as the business grows at a rapid pace.Berkshire Hathaway recently crossed the $1 trillion market cap, becoming the first non-tech stock to do so. While the stock has given back some gains in recent days and fallen below that threshold, it's still an incredible accomplishment nonetheless.But there's another non-tech stock which could be worth $1 trillion in the near future, and that's Eli Lilly (LLY -0.13%). The healthcare giant ...