Alex Robbins is a motoring writer who tests the latest new cars for a living. Richard Kitchen is an automotive engineer who spends most of his time bringing crumbling classics back to life. Together, they spend a lot of time drinking tea and talking rubbish about cars. So they thought they may as well do it with a microphone in front of them. On Overbore, Alex tries to convince Rich of the merits of the modern automobile - while Rich tries to help Alex learn more about running his classic. And along the way, they hope to help lovers of cars of all ages and types to broaden their horizons.