Patently Apple reports that Apple acquired the trademark for "Lightning" from Harley-Davidson. Harley's original holding covered items you'd expect, like motorcycle parts, electrical parts, a protective helmet and turn signal parts. Interestingly, it also covered "computer game programs, eye glasses and eyeglass frames."
As we all know, large companies like Apple and Harley-Davidson often acquire patents and trademarks for ideas of products that will never see production. Still, it can be interesting to dive into the history of different filings.