Last week we spoke to Dr. Jari Kauppila, Head of Foresight and Quantitative Analysis at the International Transport Forum at the OECD, about the concept of shared mobility.

But why hasn't car sharing become more popular in Ireland?

Our motoring expert Michael Sheridan believes it's due to the lack of public transport in many rural areas, where having your own car is essential for independence.

Meanwhile, in urban areas, public transport means driving is not a necessity for most people.

Michael joined us for The Last Word on Wheels to give a practical guide to car sharing.

Listen to the interview in full by pressing the play button on this page.