[Rosie] The Bluesmobile, as driven by Elwood Blues. The number is actually a reference to the Black Diamond Riders, a bike club in Toronto (home town of Dan Aykroyd), whose clubhouse was at 529 Jarvis St.
[Rosie] N 1 TBN is owned by Chris Jeans, who was head of brass at my kids' old school. He was the guy who played the Flight of the Bumblebee for the Lurpak advert (and was principal 'bone for Grimethorpe, and other bands). His number plate actually has "No. 1 Trombone" in small print at the bottom. He's so modest!