'The Low-Backed Car' is a song written in 1846 by Samuel Lover (1797 - 1868). The tune is said to be a variant of the English folksong 'The Jolly Ploughboy.' This PC starts the last stanza, that continues:
"On a cushion made with taste,
While Peggy would sit beside me,
With my arm around her waist.
As we drove in the low-back'd car,
To be married by Father Maher,
Oh, my heart would beat high
At her glance and her sigh,
Tho' it beat in a low-back'd car."