How would you design a system like Google Street View?

"What surprised me most was how much the process emphasized solving several coding questions under pressure. I had an initial recruiter screen, then a 45-minute pre-screen with a senior manager about my past work and impact, and after that a full loop of five interviews. The loop was two coding rounds, one of them classic LeetCode-style and one of them AI coding with data-processing and math-heavy prompts like sparse matrix times vector multiplication and k-nearest neighbor search, plus two design rounds and one behavioral. The design interviews were split between an ML modeling discussion for a computer vision problem and a system design round on something like Google Street View, which I found pretty challenging. I passed the loop, got notified that I made it through, and then moved into offer negotiation."