SANTA MONICA, Calif.--(BUSINESS WIRE)--TrueCar, Inc. (NASDAQ: TRUE), the negotiation-free car buying and selling mobile marketplace, is ending its longstanding partnership with AutoNation Inc., effective at the end of July. TrueCar’s marketplace gives consumers transparent insight into what others paid through its analysis of anonymized transaction data and access to guaranteed savings off of MSRP from its nationwide network of more than 10,000 TrueCar Certified Dealers. This network is committ