Horsepower or pedal power? Four wheels or two? Can we have both during a climate emergency? Yassmin Abdel-Magied is a writer, broadcaster, social advocate and one-time racing car engineer. Her upcoming book later this summer is Stand Up and Speak Out Against Racism. Roma Agrawal – also known as Roma the Engineer – is a structural engineer, author and broadcaster, whose expertise helped build the Shard skyscraper in London. Her latest book is, Nuts and Bolts: Seven Small Inventions That Changed the World (in a Big Way). These two mechanical minds are both intrigued by the engineering marvels that make the world go round, but Yassmin says we should do it with four wheels in a car, and Roma with just two on a bicycle. Coco Khan is your host with the roadmap to victory and there can only be one winner – you the listeners decide – follow the link below to cast your vote. https://intelligencesquared.com/vs/ We’d love to hear your feedback and what you think we should talk about next, who we should have on and what our future debates should be.  Send us an email or voice note with your thoughts to [email protected] or Tweet us @intelligence2.  And if you’d like to get ad-free access to all Intelligence Squared podcasts, including exclusive bonus content, early access to new episodes of VS and much more, become a supporter of Intelligence Squared today for just £4.99, or the equivalent in your local currency .  Just visit intelligencesquared.com/membership to find out more.  Learn more about your ad choices. Visit megaphone.fm/adchoices