We can all see that cars are getting bigger, but a new report shows just how much and the danger it creates. The average height of car bonnets is rising by half a centimetre each year, with some SUVs so tall that a small child standing in front of them is hidden from view. What are the real-world consequences for road safety? Are these designs putting pedestrians - especially children - at greater risk? And what can be done to curb the so-called SUV arms race? Our reporter Valerie Flynn joins us to discuss her recent deep dive on the topic.

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