From the viewpoint of the overall Japanese economy, unless Japanese firms succeed in developing business aggressively in global markets and expanding domestic income, then it becomes rather hard to envisage growth in domestic demand.
Motor vehicle sales have been supported by low financing costs, by high levels of customer incentives, and by high rates of vehicle scrappage and multiple car ownership. More broadly, strong growth of labor productivity, supplemented by reduced tax payments, has provided a boost both to incomes and to spending.