Wow, that Velocity looks filthy. Smoking, covered in soot... what a glorious future diesels will bring! Beautiful plane, though, and I had wondered if a radiator system like that would work on the V-Twin, but with Viking engines.
I did indeed. I think I even saw Stevie's N5921C Bonanza and I think a few planes before that, her Cessna 140, although I could not read the tail number. She is another RU-vidr.
Yes, that's Stevie's Cessna 140A N9477A at around the 11:00 mark, followed by her Bonanza at 11:55. I had a chance to meet her at AirVenture. A great person and a very competent pilot. @@projectpacer