The car simulation is now posted at my website. I was happy to get so much interest in this -- this simulation is one of dozens that I have made over the years. (Really, not nearly my favorite.) I'm going to put them up at the page below. Feel free to use in any way that you feel best. And contact me here or off list with any questions. I just made this page this morning so you will see that it is clearly a work barely in progress, but I wanted to get this simulation to you quickly. More to follow...