Speaking of back in the old days I was there then LOL. I sold the Powell Phantom 7 model J and it came from the factory with lights and I did register it for the Highway. It had about a 40 to 45 MPH speed tops.
I just rode on surface streets around Long Beach,California I never got stopped. I don't know how it will work out today but I have the original certificate of Manufacturing signed by Dorthy Powell one off the owners.
If you have a 1929 Ford Model A you can still run it on the street with some restrictions right, so why not a mini bike made to be licensed for the street ? So if a mini bike is wired up to have proper lights and brakes on both front and rear wheels. The other hurtle is insurance for state requirements and a motorcycle license.
My Tri-Sport RTS-440 trike was no problem to re register for street use and I had full coverage from my State Farm Agent.
Let's start a green movement to allow mini bikes to once again ride the open road and do our part in using less oil and having more fun in our coming and going. LOL
Merry Christmas Steve