The Academy of Equestria is known for their technological innovations, and Twilight Sparkle has long been aware of their advances. So when she receives a letter from the Princess herself regarding technology that the Academy has made, Twilight is eager to explore the opportunities that open up alongside it. Fascinated by the "cars" she encountered, the Academy asks her to attempt to spread some awareness and use her influence to spread the knowledge about them. Twilight's stumped for a while before Pinkie suggests making a TV show, and with (almost) everypony's approval, they begin production almost immediately.
So fillies and gentlecolts, introducing My Little Top Gear: Speed is Magic!