Concept 2: Title not decided yet

The Idea:
This one is an Arcade style Hoverboard racer, where the player will have to race against five competitiors(AI or Human) in a fast-paced, action packed race on HoverBoards. The race takes place in a city's plumbing system a.k.a the Sewers!
Standard Rules:- The player wins if he finishes first. One the track he will encounter several obstacles such as sludge leaks, crossover pipes and big, deep holes! He has to evade these obstacles and finish first.

But wait, There is one tiny little twist:(It gets a bit complicated here, so read carefully) :

Each Hoverboard is powered by a Nitrous Oxide Deployement Engine system, and uses this Nitrous to accelerate. Each board is also fittted with a Vibrato device that gathers sound waves when in motion and unleashes them when required!
If these sound waves hit an engine it shorts the engine resulting in the system dumping all the nitrous into the engine at one go. This will cause the hoverboard to go 5 times faster, and the player controlling this hoverboard will have to keep his board steady and avoid being hit by the obstacles at the same time.

So, if any player triggers this Vibrato system, it will cause all the people who are within a particular range of his board to blast forward at an extreme speed. Hence if a player triggers this just before an obstacle of some sort, then everyone sorrounding him will go slamming into the obstacles, if they dont react in time.
Of course it takes a three second continous blast of sound waves for the engine to get short, so if players can get out of the range of the blasts by that time, then they're safe.