More tiny sapient ungulates: Scootaloo grows up into a beefy punk with black metal piercings and a leather jacket, it is canon and I will fight absolutely every asshole brony who draws grown up Scoot as a dainty little thing with long hair.
 
She also rides an alicycle, which is basically a very aerodynamic bicycle that you propel with your wings (because internal combustion engines are mysteriously absent in mlp). She also has a magical disability and can’t achieve sustained flight, her wings don’t conduct magic well enough. This is probably do to her mixed pegasi and earth pony heritage, which is also one of the reasons she lives in Ponyville. Likely one of her parents or close relatives is wingless and can’t live in Cloudsdale.