I am going to say what most people have said but: really nice game with good potential.
Rework it and add new content when you have spare time, guys. :)
Well, the greatest problem, in my opinion, is that when you leave a single unsatisfied customer - your rep drops to 5. Early on it can pretty much end the game...
To get the hatchback challenge you need to charge the boxes while being boosted, but driving on the back wheels, so you just fly over it- similarly like with zombies. I reached 1081 feet doing so.
I like the fact that this game made way on many different sites, since now I can save more than three songs. ^.^ Should've written them on paper, though...
Excellent game!
Though I must add - taunts are seriously broken on the highest difficulty. As conclusion nears, I find more and more enemies who tend to stop fighting and start swearing. Then I lose.
For level 18, here's a tip (if you are not super-fast, that is :] ):
Type ,,balloo" where balloon should be, select all letters, Ctrl+X, then retry level and just paste it with Ctrl+V in a split second.