According to St Patrick's in Glenamaddy, Co Galway, hundreds stopped off to receive ceremonial ashes on their foreheads.
Parish secretary Breda Keaveney said: "It was just so reverent and so respectful. There was just a wonderful atmosphere."
Catholics traditionally receive the blessing at this time of year at a special Mass service.
St Patrick's said it wanted to reach those who might not be able to attend church.
Parish priest Father Paddy Mooney said he thought of the 'drive-through' to help the sick, those with difficulty walking, people on their way to work or families enroute to school.