Daihatsu Midget II's are 1335mm/52" wide, and they look top-heavy!
Peel P50 is 990mm/39" wide, and a top-heavy three wheeler.
At 2:54 you can see Clarkson lift the front wheel. Obviously it's got a much, much higher center of gravity and much, much shorter wheelbase than I plan to use. Its wheelbase is 50", about half my minimum acceptable measure, however 39" in width sounds about right.
Recumbent bicycle seating position:
Am I crazy to benchmark against the Midget II, Peel and a bicycle?