A QT station in Buckeye Arizona (western PHX suburbs) got diesel in their unleaded tanks by mistake. QT doesn't know as yet how it happened, but they are offering to pay customers for any repairs needed to their vehicles. Link to story is below.
http://www.abc15.com/news/region-west-valley/buckeye/buckeye-gas-station-mixes-up-gas-diesel-fuel
http://www.abc15.com/news/region-west-valley/buckeye/buckeye-gas-station-mixes-up-gas-diesel-fuel