The Bobster trike by Zeel Design is an interesting custom, one reason being the builders are former engineers from Bombardier who design their customs completely on the computer before cutting or machining any metal.
The Bobster is a copper plated trike with a 1200 Sportster engine and 5 speed transmission. The front wheel is another of those 26 inchers with a tire from Vee Rubber like the Vinnie from Matt Hotch. This trike was on the Discovery Channel Biker Build Off and also competed in a slew of other custom shows, like the AMD World Championship, winning quite a few awards along the way.
As I mentioned when writing about the 26 inch tire, you need a wheel to mount that monster and Zeel just machined one from a block of aluminum. The design was completely done in the computer because they wanted to know everything would fit since this was one of those 10 day wonders for the build off, I guess you don't count computer design time.
It's interesting that former Bombardier engineers would build a trike when Bombardier just made the news with a trike of their own, actually coincidental since the trike idea came from Discovery Channel for the competition.
I'm not suggesting this trike is any kind of cool road machine, actually I just included this because it was the only other custom I know of so far using the 26 inch front tire besides Matt Hotch's Vinnie. Now that these two are out there, we'll be sure to see more.