Zero 265A 96

A: I would say no, not at all - I would not use the Zero 265 for vehicular traffic but would and have used with success the Zero 655A-V3 96" 5" x 0.5" Full Body Strength Utility Threshold as seen here:

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The full body strength filler is defined here:

Full Body Strength. An aluminum composite filler containing aluminum oxide and silicone carbide. Ideal applications include heavy commercial traffic in supply rooms, manufacturing buildings, schools, cafeterias, automobile dealers, hospitals, industrial facilities.

I would also consider adding the Zero 96A 96" Aluminum Door Sweep with Brush angle style bristle as seen here:

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at the bottom to seal the door which can be used at the jambs and header as well.