Mario Kart doesn't hold a candle to Diddy Kong Racing, which CTR shares most similarities with. In addition to collecting fruit to increase your speed, being "juiced up" will transform your items into more powerful ones (TNTs that can be shaken off by hopping become Nitros that explode on contact, the bubble shield no longer having a time limit) giving you even more incentive to horde the fruit. Every track has shortcuts that can be difficult to use without enough fruit or a required item, rewarding those daring enough to attempt using them. You get speed boosts for hang time and power sliding, encouraging you to jump every ramp and drift on straight roads. It's an incredible game that deserves all the praise it gets.