Cohen owns multiple taxi companies but denies he owes the tax to New York state.
The world's largest maker of premium cars and the world's largest automotive supplier are teaming up.
Carpooling could eliminate the need for 75 percent of NYC taxis.
The San Francisco protest is one of several demonstrations in the U.S. against Uber's recent cut in fares.
Meanwhile, taxis have taken a huge hit in the transportation battleground.
A revolution is taking place and transportation is the battle zone—the old order is under attack.
Now consumers have a real alternative against which they can compare the protectionist status quo.
France's highly regulated taxi drivers say Uber has hit their business unfairly as it has expanded rapidly.
A spokesman described Uber as "like getting in a sea full of sharks" for female passengers
"This about an all out assault on our profession, our livelihoods," said Max Small, a driver of one of London's black taxis for 34 years