I have heard that you did some work in IndyCars in the USA in the 1980s but can't find much information about it. What can you tell us about your time there, and how did it compare to working in F1?
Sarah McCallum, via email
Yes, I did a little bit of engineering in CART as it was called in the 1980s.
It was great racing; there were a few different chassis, some very good drivers, both American and from around the rest of the world, and a great selection of tracks from the Canadian circuit Sanair, which was a 7/8ths-mile tri-oval, to Michigan, which was a daunting 245mph-average-speed oval, to Elkhart Lake, which is still one of the best road circuits in the world.
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