final Point B = new Point(10, 0);
final Graph<LengthData> g = new MultimapGraph<LengthData>();
final GraphRoadModel rm = new GraphRoadModel(g, SI.KILOMETER,
NonSI.KILOMETERS_PER_HOUR);
g.addConnection(A, B, new LengthData(3));
final UnitConverter conv = NonSI.KILOMETERS_PER_HOUR
.getConverterTo(AbstractRoadModel.INTERNAL_SPEED_UNIT);
assertEquals(conv.convert(10),