Hi there,
As an electric vehicle advocate and a gamer with penchant for arcade games I just had to. 
I really like playing Tapper so I used the game mechanics as a basis and expanded on that:
http://spiff.be/evtapper/
Important tip that had me scratching my head for a while:
When using a collider, add the sprite to its sprite group at the start of its tween (with onStart), NOT before!
Have fun!