Critical Mass 4: The Politics - Molden & Schmidt Episode 15

We've heard about the big idea - taxing cars by weight and mileage, not engine type. We've looked at the science, the money, and the practicalities? But what about the politics? What could persuade governments to revolutionise the vehicle taxation system? How could this concept overcome the scepticism of the press, public, and politicians who don't like meddling in the costs of driving? Those are the big questions we explore in this final episode of series 2.

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Critical Mass 3: The Money - Molden & Schmidt Episode 14

So how would this radical new system work in practice?

How much would motorists actually pay?

Would petrol still be taxed, too? And could you cheat your way around it?

Those are the questions Nick and Felix set out to answer in episode three of our second series. Their new book - Critical Mass - explores the concept of taxing cars by weight and miles driven, not by type of engine. Oliver's here to 'stress test' their proposition, and see if their answers really stack up.

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Critical Mass 2: The Science Molden & Schmidt Episode 13

In the last episode, Nick and Felix pitched their big idea - to tax cars by weight, not type of engine. They say mass is the critical environmental factor, in an electrified world of motoring. But what's the science behind it? Do the sums and formulae add up? That's the subject of this second podcast of series two.

We're joined again by Felix Leach, Associate Professor of Engineering Science at the University of Oxford. He and Nick are the authors of a new book - Critical Mass: The One Thing You Need to Know About Green Cars.

And Oliver's on hand, too - to put Nick and Felix through their paces.

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