At least a further three people were hospitalised, including a passenger from the Maserati.
A tourist who witnessed the aftermath of the crash told KLAS-TV that the burning taxi looked like a fireball.
More people may be hurt, Sergeant Sheahan said.
It is the latest in a series of violent actions on the tourist corridor since the beginning of the year. Two people were critically wounded in a shooting at a parking garage 6th February, and a tourist was stabbed in an elevator at The Hotel at Mandalay Bay ten days later.
More top news
The Scottish Government is set to get control over income tax and a raft of other new powers under plans agreed by the Smith Commission.
Oscar-winning actress Jennifer Lawrence has landed a spot in the music charts with a new single for The Hunger Games: Mockingjay - Part 1.
Leaders Live: UK needs to treat drug misuse as a health issue and not a criminal one, leader of the Green Party Natalie Bennett has said.