The Lamborghini Miura, produced from 1966–1973, is often said to be the first supercar. By the 1970s and 1980s the term was in regular use, if not precisely defined. One interpretation up until the 1990s was to use it for mid-engine two-seat cars with at least eight cylinders (but typically a V12 engine), a power output of at least 400 bhp (298 kW) and a top speed of at least 180 mph (290 km/h). Other interpretations state that "it must be very fast, with sporting handling to match", "it should be sleek and eye-catching" and its price should be "one in a rarefied atmosphere of its own". or regard exclusivity (i. e. limited production volumes) as an important characteristic.