Hertz reported $52.1 million net income for the last three months of 2011, compared with a $23.6 million net loss for the same period in 2010,

the company reported on Wednesday. Worldwide rental car revenue during the quarter increased 9.5 percent year over year, and the company reported "record transaction days for the quarter," up 7.2 percent year over year. Worldwide rental rate revenue per transaction day, however, decreased 4.2 percent.