This weekend, I had a spare couple of hours on Saturday night (as often happens when you have a kid) so I decided to pass the time with a bit of copy-paste coding.
I grabbed a bit of example code for a top-down racing game built using Box2d and GameJs. I then grabbed a Google Maps demo and a Nokia Maps demo and smooshed them together. I've seen a few racing games before so I know there's nothing innovative here, it's just a bit of silliness.
Copy-Paste: Not a bad thing
There are many developers who will tell you that blindly copy-pasting is a terrible way to code. They make the valid points that you don't understand something if you don't read it properly and that you'll end up stuck down an algorithmic cul-de-sac with no way to three-point-turn your way out (although they may phrase it differently). These are valid points but...
If I'd sat down on Saturday night and thought "I want to build something in Box2D" then gone to the site, downloaded the library, read the docs and loaded the examples, by the time I had understood what I was doing, Sunday morning would have come round and I'd still have GameJS to read up on. There's absolutely no harm in blindly catapulting yourself a long way down the development track then looking round to see where you are. Sure, you'll end up somewhere unfamiliar and you may end up with absolutely no clue what the code around you does but at least you have something to look at while you figure it out. At least a few times, you'll find something almost works and a quick search of the docs later, you've figured it out and know what it's doing.
Basically, copy-pasting together a simple little demo and making it work is a lot more interesting than taking baby-steps through example code and beginner tutorials. Don't be too careful about trying to build something complicated.