From that web page:
freedom units
Universal measurements of American awesomeness. It encompasses all types of units (temperature, length, area, volume, speed, weight, GDP, etc).
It is going to be a hot 101° Freedom units outside today
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I assume that is meant as a joke, because it is pretty silly.
There is nothing "awesome" about the archaic measurement system used in the US. The metric system, as used by the rest of the world, is rational and easier to use.
In any case, 3 meters is about 9 ft 10 inches, not "10-12ft" as stated. As pointed out above, Tesla claims the ultrasonic sensors go out to 16 ft.