Yes, Gas stations.
I just read a (few years old) article where it said in the US on average gas stations pay 2x more in credit card fees as they make in net profit. IOW, their profits could triple by accepting bitcoin . And if they sacrifice some of that to reduce prices, I dont know about the US, but here gas is mighty expensive and people actively search very hard for the cheapest gas prices, or drive quite a while. So cheap gas might be a nice incentive for them to buy some bitcoins to use at the pump.
/ot.
Businesses like petrol stations are subject to a fair bit of scrutiny. Both taxation authorities and banks have a damned good idea of how much a service station in a particular area should be turning over and their fraud algorithms will flag the business if they go too far outside the average (if cash sales seem to high, there's a possibility to business is being used to launder money; if they're too low, there's a possibility that income is being undeclared).
Accepting Bitcoin might be more trouble than it's worth in the short term for businesses which are already regarded as somewhat high risk by conventional financial services/authorities.