The 1931 Bugatti Royale Kellner Coupe was sold for $8,700,000 in 1987.
tennis
NBA or MLB
World War II
Racing horse
I believe formula-one is the most costly sport in the world.
The Maybach Elexero. It costs a whopping 4 million pounds. So it will be the most expensive car until 2010.
uranium and plutonium are much more costly minerals.
The world's most expensive car is the Maserati Birdcage 75.
uranium
your question is worded wierdly but the most popular car in the world is the Toyota corrolla
It is the most powerful and fastest production car in the world.