Used-vehicle sales jumped 105.5% month-over-month in May and the year-over-year deficit narrowed from 38.4% in April to 12.5% last month, according to a report from iSeeCars.com. And while the majority of states and major cities were still down year-over-year in May, half of the nation’s 20 largest markets more than doubled their used-car sales from April, […]