In the 'better late than never' department... spotted a light metallic blue S2 Spider climbing the long hill west of Woodland Park on U.S. 24 around mid-summer this year. I was stuck behind a few cars in my Passat wagon, and could not get around them to have a closer look before it turned off on Edlowe road (goes up to Catamount recreation area on the north face of Pikes Peak).
I've always been curious whether the owner lives up there; seemed likely since the road is only about 3 miles long. I think this is still the only vintage Alfa I've seen on the road in the nine months since I first started thinking about buying one, and naturally started watching out for them. A testament to their rarity.