The story of would-be Uber rival Karhoo's $250m taxi ride to nowhere

When bills for a corporate credit card used by Karhoo Inc. Chief Executive Officer Daniel Ishag arrived, employees in the London office of the car-hailing startup often spotted unusual purchases. There were designer shoes and clothing, along with veterinarian’s bills for a pet dog. The employees flagged the costs as potentially non-business related, but signs of lavishness continued — first-class flights, a blowout in Las Vegas, Cuban cigars.