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you look at the average sort of mass of vehicles and average occupancy of vehicles in the u.s. you know with single with passenger cars we're using
maybe about ninety percent of the energy to move the vehicle as opposed to moving the people inside and one of the reasons for that is crashworthiness standards
which are great because that's what's enabled us to be surviving these crashes at 40 miles an hour but if we do have vehicles that are not going to crash or
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