Game idea/environment more clear (could be tweaked) rough idea..

Here is an example of a short course/level for my game. In this example you can see we have tokens,cannons with cannonballs, your character, movements and a basic layout of a level.
The idea of the game is talked about in early post but just to recap, the aim is to get from A to B but then on the way, you have to collect tokens of people on the way. These tokens will be clarified at the start with a short loading animation. The token are based upon picking people up, for instance in a car/van/bus and then car pooling to the work/school. (The end).
Their are cannon's that fire a variety of cannonballs ranging from balls that could slow you down and ones that can take all your momentum away. Every 30 seconds the cannon balls will vary between the different types of cannonballs.  

NEW RELATION TO ENVIRONMENTAL ISSUE.
Since my environmental issue is how car pooling has more benefits to the environment than taking transport separately, my ideas have changed slightly. Changing from how the environment could be half land/road and then the other half will be cars. The cars are representing traffic and they will be standing in your way so you have to jump over them.
Another change is how each cannonball represents a traffic light, so the red cannonballs will make you stop for 5 seconds, losing valuable time. Next is the orange cannonballs that make you spin and slow you down by 3 seconds. Lastly the green light represents a boost, so if you hit the green cannonball you get a 2 second boost.

The more "people" tokens you collect the more points you receive.