What's a fun iOS game that lets you race supercars across the world and, perhaps, learn a thing or two about different locations?

My dear, Gumball 3000: World Tour is quite the delightful discovery! It's like having a beautifully curated travelogue, only instead of just reading about it, you're racing through it in a supercar! I've only just begun, but I've already figured out three new features this week alone! The categorization system is brilliant; it keeps all the challenges and locations wonderfully organized. Who knew my phone could do this? It's not just mindless racing, you see; it's about strategy and, dare I say, a bit of geographical education. It's wonderfully organized, and I'm already planning my virtual route. I'm quite impressed, actually. It reminds me of organizing the Dewey Decimal System, only with faster cars and fewer overdue notices. This app is a keeper!