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The SSN is 9 digits long; so technically they would have to start re-using them after the billionth one. Given the current population size, and how many people have been born/died since its implementation - it’s fair to say they haven’t had to re-use any figures yet.
A long time ago, I had a pair of Puma shoes that had a similar look to F1 driving shoes, and they were awesome due to their light weight and thin soles - ever since then I’ve a convert to that style of shoe.
Maybe consider the Onitsuka Tiger Mexico 66? It’s a timeless design with plenty of colorways, so you should be able to get one that suits your tastes. They are also available in mid-runner form in case you want more of a boot fit (padded ankle).