I suspect flat fronts and backs are driven by length restrictions? IIRC this is why cab over designs decreased in the US (length requirements were relaxed): ht

I suspect flat fronts and backs are driven by length restrictions? IIRC this is why cab over designs decreased in the US (length requirements were relaxed): https://www.quora.com/Why-are-Cabover-trucks-for-the-most-part-no-longer-used-in-the-USA https://www.quora.com/Why-are-Cabover-trucks-for-the-most-pa...