My cats don't have wings, but you should see them fly up and down the hallway, out through their window, onto their "balcony", down the ramp, roll and play in the dirt, dash back in like mad hatters, chasing one another and having a blast.

As to the original question...I suggest we kill all motorised vehicles. It'd be a lot safer not only for our pets, but also our children, other pedestrians, and the wildlife population.