Car jam applet, solver and generator

Try out this applet to see what this is all about. Yes, it's a simple puzzle game made with Java. The applet source code is downloadable here. And source code for the C++ program that I used to automatically generate the mazes is downloadable here (requires this and this for compiling). It also includes a solver for car jams. Well, that's what it uses to generate the mazes - It just creates totally random maps and then tests if they're solvable and have a solution long enough.