Today, a lot of so called arbitrage, much of it done by hedge funds, involves assets that have some similarities but are not identical. This is not pure arbitrage and can be far from risk free. Arbitrage pricing theory This is one of two influential economic theories of how assets are priced in the financial markets.
Ford of Europe introduced the Focus in 1998 to the European market as a replacement for the Ford Escort. The decision to name the new car the Ford Focus was made in early 1998, as Ford's overheads had been planning to keep the Escort nameplate for its new generation of small family cars.
From Wikipedia: The first Compact Disc for commercial release rolled off the assembly line on August 17, 1982, at a Philips factory in Langenhagen, near Hanover, Germany. The first title released was ABBA's The Visitors (1981). CDs and Sony's CD player CDP-101 reached the market on October 1, 1982 in Japan, and early the following year in the United States and other markets. This event is often seen as the Big Bang of the digital audio revolution.