Costs at Toyota’s assembly plants at Cambridge and Woodstock in Ontario are higher than at its U.S. factories and it makes sense to produce the more expensive vehicles in Canada, the newspaper quoted sources familiar with the matter as saying. Sources told Reuters that Toyota will spend $1 billion to build a car factory in Mexico, which is expected to begin functioning from the summer of 2019, ending a self-imposed three-year freeze on new investments. Toyota also plans to announce a new car factory in Guangzhou, China, this week.