private void drawGameOverMessage(Graphics g) {
		g.setColor(new Color(255, 255, 255, 200));
		Rectangle r = Helper.getCenteredBounds(new Dimension(800, 200), getSize());
		g.fillRect(r.x, r.y, r.width, r.height);
		g.setColor(new Color(0, 0, 255, 200));
		int calcY = (this.getHeight() + 50)/2;	// Centered on the vertical axis
		int yOff = 50;	// How far the other two lines are offset from the center line
		g.setFont(new Font(Font.SANS_SERIF, Font.BOLD, 72));
		g.drawString("GAME OVER", (this.getWidth() - 700)/2, calcY - yOff);
		g.setFont(new Font(Font.SANS_SERIF, Font.BOLD, 48));
		g.drawString("You ran out of fuel - so you died.", (this.getWidth() - 745)/2, calcY);
		g.setColor(Color.BLACK);
		g.drawString("Press ENTER to restart!", (this.getWidth() - 615)/2, calcY + yOff);
	}