In November last year Coinbase partnered up with Shift Payments and announced the launch of its US bitcoin debit card, allowing bitcoin to be accepted in America anywhere VISA is taken, and has recently released some information regarding its adoption and use.
Overall, since its launch, over 10,000 people have signed up for the card and over $1,000,000 worth of bitcoin has been spent using it. Perhaps unsurprisingly, the amount being spent using the cards rose each week, up to the days around Christmas where around $160,000 worth of bitcoin was spent in one week. After the Christmas period this fell to around $70-80,000 per week but is slowly growing.
http://allcoinsnews.com/2016/02/03/coinbase-provides-insight-into-shift-card-usage/
