There was an interview with Gordon Murray, where he was comparison testing supercars of the era while designing the McLaren F1...his comment on the Ferarri F40

There was an interview with Gordon Murray, where he was comparison testing supercars of the era while designing the McLaren F1...his comment on the Ferarri F40 (I think) was "well, we realized we couldn't build one in our shop if we tried, because we didn't have anyone that would weld that badly..."