I recently replayed and completed Diddy Kong Racing again and whoever has missed out on this gem - give it a go, it still holds up remarkably well thanks to the core gameplay just being totally timeless.
I often wonder why we haven't seen more Kart Racers that copied Diddy Kong Racing's aspects. The tightness of the controls allowed you to absolutely perfect that game. I mean, look at this video:
https://youtu.be/0Ct8n1CClUM?t=636
It's nuts and I love it. Mario Kart has since gone into a direction that I don't really like, the physicsy/bobby feeling of the Karts and all that... not a fan at all. I was always pretty surprised how well of a reception Mario Kart 8 got, which to me is a decent little game, but doesn't come close to the greatest Kart Racers out there (Personally, I think Super Mario Kart still trumps most other Mario Karts due to the level of mastery you can achieve).
I even made a prototype game called Super Turbo Drifters 2 or so years ago that was heavily inspired by Diddy Kong Racing (recently ported it to Switch:
https://www.youtube.com/watch?v=CGBIMtebixo). Sadly won't be able to finish this one, but I always thought it'd be amazing if we'd finally get a Multiplatform Kart Racer that captures the essence of Diddy Kong Racing :)