Typical italian exclamation, like dio cane, dio porco, dio ladro ecc., used when people are angry.
For example, in Padova, there is a man riding a bicycle who screams "DIO CANCAROOOOOOOOO" if you call him "maometto".
Tasi dio cancaro!
Va in figa de to maredio cancaro!
Dio cancaro de dioooooo!
Butta tritolo dio cancarooo!
A fancy-sounding yet affectionate name for a car that is even less functional than a hoopty. A car might be called this because "it rolls down one hill, and canardly get up the next".
Exact origin unknown, but it is a pun on Rolls Royce, a particular expensive make of motor vehicle, and "Canardly", I believe a make of small passenger aircraft.