Came across these two amazing home-built bikes just outside Rondeaux Provincial Park in Ontario, Canada. Both were a rusty, with flat tires, but the owner proudly placed them at the curve of the driveway to show them off.
The first bike, above, is a six-wheeled sociable tandem (missing a side wheel) with tiller steering and two drive trains.
Nearby was this sporty, five-wheeled bike. This one has suspension on the center wheel, made from what appear to be air pistons off a hatchback tailgate, so that you can lean the bike into a turn. The steering wheel is connected to the front wheels by a linkage to the right fork and then a rod to the left fork. Altogether an impressive home-made bike. I wonder if that roll bar was a necessary feature?