The 10 millionth U.S.-built Honda Accord rolled off the assembly line in Marysville on Thursday, a significant milestone for the auto manufacturer that employs nearly 14,000 workers in Ohio and is key to the regional economy.The facility was considered a risk when Honda first started building cars there in 1982.he Accord produced Thursday was also the 20 millionth vehicle Honda has made overall in the U.S. The brand-new vehicle sat side-by-side with USA-001, a 1983 gray Accord that was the first built in Marysville in 1982.