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07:02:55 PM May 10th 2014
Some Real Life data to consider:
  • Above 200mph aerodynamic forces exceed most vehicles' gross weight and require airfoils and other specialized designs to retain traction.
  • Land speed records are usually taken as the average of two or more straight-line runs. The closed circuit record (where the vehicle returned to it's starting point in one run) is only about 237 mph. At this speed G-forces on turns are at the limit of wheels ability to grip the road.
  • The wheel-driven record (as opposed to jet or rocket cars) is about 470 mph.
  • All of the above taken together, free-road vehicles would either be limited to speeds about 200mph, or would require extremely long straightaways and curves.
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