3. Mukesh Dhirubhai Ambani
India may be considered a developing economy according to many standards, but this country has a number of billionaires who knows how to have fun and build their car collections. One noted billionaire is Mukesh Ambani, the president of the Reliance Group in India. Ambani is known to splurge on a number of classic and powerful cars including the armoured version of the BMW 760li. The Maybach 62S is another privileged member of the fleet, powered by twin-turbo V12 engine. He also owns a Bentley Flying Spur, powered by a twin-turbo W12 engine.