...a honda dealership? been wondering this because they make these cars and thers not alot of dealerships of Acura and Infiniti's around here but there are Nissan and Honda ones
Of course you can take your infiniti to nissan and your acura to honda... the only thing that they cant do for each other is warranty work.
You can pretty much take any car to any general repair shop, but some shops will be able to work on a specific make better than most, just have to ask the shop if they will look at whatever it is you have.
if a car is still under warranty, it has to be done at the vehicle specific dealership.