Autozone Inc
A retailer of automotive replacement parts and accessories, AutoZone runs thousands of stores across the US, Mexico, and Brazil, selling its own Duralast parts along with tools and diagnostic help for do-it-yourself drivers and repair garages. It began as Auto Shack, a 1979 offshoot of a Memphis grocery company, and renamed itself AutoZone in 1987 after a trademark clash with Radio Shack. Its Loan-A-Tool program lets customers borrow specialty tools free for up to 90 days, so DIYers needn't buy gear they'll use once.