Uber suffered a legal blow this week when a California judge granted class action status to a lawsuit claiming the car-hailing service treats its drivers like employees, without providing the necessary benefits. Up to 160,000 Uber chauffeurs, or “driver-partners” in company-speak, are now eligible to join the case of three drivers demanding the company pay for health insurance and expenses such as mileage. Some say a ruling against the company could doom the business model…