The state plans to dump its longtime auto-emissions contractor and turn over testing to a network of 300 garages across the state - a transition that will bring a halt to all testing for at least six months, starting July 1. Department of Motor Vehicles officials announced Thursday that they would begin negotiating a five-year contract with Agbar Technologies Inc. of Chicago, which would coordinate a decentralized system of testing at local service stations and dealerships. The move would end the state's rocky relationship with Connecticut-based Envirotest Systems Corp., which has handled emissions testing since the program began 18 years...