Amazon Autos is now live and in partnership with Hyundai dealers in 48 U.S. cities, allowing shoppers to buy a vehicle from the ecommerce giant for the first time. +

Analysts say more than one-third of upside-down car buyers owed more than $10,000 on their prior loans in the third quarter, with 7.5% owing more than $15,000. +

Edmunds analysts fear a growing number of 84-month auto loans could indicate that new-vehicle buyers are stretching beyond their financial means. +