see more

Billionaire activist investor Carl Icahn attends the Leveraged Finance Fights Melanoma charity event in New York, U.S., on Tuesday, May 19, 2015. Lyft Inc. is worth more than its recent $2 billion valuation, based on the $50 billion value of larger car-hailing rival Uber Technologies Inc., Icahn said, after he led a fundraising round at Lyft last week. Photographer: Victor J. Blue/Bloomberg via Getty Images

Billionaire activist investor Carl Icahn attends the Leveraged Finance Fights Melanoma charity event in New York, U.S., on Tuesday, May 19, 2015. Lyft Inc. is worth more than its recent $2 billion valuation, based on the $50 billion value of larger car-hailing rival Uber Technologies Inc., Icahn said, after he led a fundraising round at Lyft last week. Photographer: Victor J. Blue/Bloomberg via Getty Images