Reuters - Tesla Inc top boss Elon Musk said the electric carmaker had not signed a contract with Hertz, more than a week after the car rental firm announced a massive deal with the electric car company.


Tesla's shares fell 5% to $1,146 in premarket trading, after a steep jump following the news of the biggest-ever order - 100,000 electric cars for Hertz - on Oct. 25, which helped Tesla breach $1 trillion in market capitalization .


Musk tweeted late Monday, "If any of this is based on Hertz, I'd like to emphasize that no contract has been        signed yet ."


" Hertz deal has zero effect on our economics."


 Tesla and Hertz did not immediately respond to a request for comment.