AFAICT, This truck will not be able to pass either the Federal Motor Vehicle Safety Standards (FMVSS) or the EPA/CARB emissions standards for high speed vehicles. The new Colorado rules for Kei vehicles does not remove those requirements because it relies on the existing exemptions available for 25+ year old vehicles.
IOW, it needs to keep the 25mph speed limiter to qualify as a low speed vehicle, even in Colorado.
Good point.
EPA/CARB effectively sets a minimum size for trucks. Rather than having a small light truck that can do the job, you get a Ford F250 hauling a single bale of hay.
But rolling back or adding exemptions for small trucks is political suicide despite the clear environmental benefits.