At least 311,000 2010 Prius hybrids are expected to join Toyota's list of recalled vehicles after the company received numerous complaints about the car's brakes, a source told The New York Times. Toyota is likely to make the announcement early in the week following their recall of approximately eight million vehicles worldwide due to faulty gas pedals. After some 2010 Prius drivers expressed concerns about being unable to stop on uneven surfaces, U.S. regulators opened up an investigation last week. Executives at the fallen car company acknowledged the braking system flaw on Thursday and said it was corrected in Priuses built after the end of January. The hybrid vehicle was redesigned for the 2010 model year, including a brake system that was intended to increase fuel efficiency, according to Toyota. Toyota's president apologized for the recalls Friday.