Cyrus: I felt like a hypocrite in Porsche tank

Pop star Miley Cyrus traded in her sporty Porsche birthday present for an eco-friendly Toyota Prius - because she felt like a hypocrite behind the wheel of a gas guzzler.

The singer/actress was handed the keys to her mother's Porsche when she turned 16 in November, but now her father has bought her a green Prius - and Cyrus couldn't be more relieved.