Awesome visit in your garage!! Car spotters in New York (Instagram) have gone nuts over your P4/5 the last few days! It sure amplifies the social media effect when you have an Huayra playing along too (and Mr. Horatio's Zonda F??).
A bit off topic, but have you ever done a thread (or two) about the two prewar cars? Would be very cool to have a detailed pictorial of those cars. The Duesenberg in particular has some very cool engineering for its day.