It's the french 'deux cheval'
Not the literal 2cv. he ryhmes it with blue.
She drove her mother's car, 'twas a deux cheval
I was most impressed by her casual dress
I was most impressed
Inside her rented room colored deepest blue
I suppose we found some kind of happiness

She drove her mother's car, 'twas a 2cv
I was most impressed by her casual dress
I was most impressed
Inside her rented room colored deepest blue
I suppose we found some kind of happiness