Source: Curium does not exist in nature. It is a synthetic element and it is produced in nuclear reactors by bombarding plutonium with neutrons. Isotopes: Curium has 15 isotopes whose half-lives are known, with mass numbers 238 to 252. Curium has no naturally occurring isotopes.
2017 Rolls-Royce Ghost Series II. Everything in life is relative, and perhaps no car illustrates this point as effectively as the Rolls-Royce Ghost. While it's technically the entry-level Rolls-Royce model, the Ghost's $250,000 base price puts it in the stratosphere of the overall automotive market.
The 1904 Rolls-Royce 10 hp Two-Seater is currently listed on the Guinness World Records as the most expensive veteran car to be sold, at the price of US$7,254,290 (equivalent to $8,379,000 in 2016), on a Bonhams auction held at Olympia in London on December 3, 2007.