HUNKY RACER DRIVING MICHELLE NUTS!

Electrifying chemistry links lady killer and Barack's smitten wife

- 

SPELLBOUND Michelle Obama is playing Russian roulette with her shaky marriage to ex-prez Barack by crushing hard on hunky Formula One racing superstar Lewis Hamilton, insiders tattle.

The fawning, 58-year-old former First Lady was pictured in a tender embrace with the 37-year-old British speedster who is tied at seven for most Driving World Championships and worth a whopping $250 million while he hosted her before a recent race during a star-studded Florida weekend.

Bombshell photos show the pair holding one another tight while at the Miami International Autodrome, leaving witnesses shocked by their electric, romantic chemistry.

"Michelle held on to Lewis with a real passionate intensity and clearly didn't want to let him go," dishes an insider. "It was kind of creepy how obviously drawn to him she was.