New Idea for Rotating Game Mode

Was thinking about a new game mode to add to the rotation, tell me your thoughts:

Race to the Finish First person or persons to kill the nexus wins. It can be one or two people per lane, one might be better. Enemy Ai is optional, but would probably make it better. You try to push your lane faster and hit the nexus last. There are things that could make it more interesting, such as lane-crossover, or whether or not people should be allowed to enter other lanes. Or how about whichever lane gets the first inhib gets super-minions, but this also makes the other lanes spawn enemy super-minions.