I enjoy the vs. challenges. It would be great to be able to select a destination on the map, and then race someone to that destination. With all the different paths available, it would be an interesting race.
Of course, it would have to be made so you can't teleport there, else those with that ability would always win. And no taking the subway, either!
But currently, there's no reason you can't organize a race with a friend... you could, perhaps, start on the same street, and each head opposite directions to start... this would require you to trust that your friend wont TP or subway, however.
Sounds like fun to me!