3-wheel atv's are illegal on public roads here. Too many fatalities. So I think the Robin would fall into that category here. And those are the ones that have the driver centered over the axle.

Three wheeled Harley's? We have a lot of them here.  ATV's of any kind, 3 or 4 wheel aren't legal on our streets at any time.  The Robin would have to meet all other highway requirements, which I can't say it would or wouldn't. 

Doric.

The "I" in Doric is Silent.