I love the idea especially with a hitch and capable trailer (ahead warning:everyone has their own great vision and 0-pinions).
But I foresee some potential problems ahead in terms of using it without some sort of registration and insurance.
I don't like any of it but that's the way it is.
You don't want to sell a few/dozen/thousand products, and then have people sue later on claiming it's illegal to use in their state.
Or this or that. Whatever. F'k them. But you still have to go at it with a bit of armour.
Patent trolls claiming to own the idea are mostly based in E. Texas and there is little protection against them.
Long video but worth it for any independent startup:
https://www.thepatentscam.com/
-------------------------
So where does your awesome product fit in?
Exactly.
A little load test is needed to see what is out there...so you don't waste your own time and mental effort....on idiots and thieves.
(sorry to be slightly negative, but I would hope for you to be able to make a nice contribution to society in peace...your peace especially....make and sell...expand...enjoy..)
(This is a totally awesome idea and I love it)
----------------------
1). As a regular, full-on motorcycle, it would require all the license tests and state endorsement for the customer.
In that case limiting 'Modes' would be unnecessary to even start with..
-15mph is useless on all city streets except in the bike lane, which will quickly attract attention, and bikers complaining.
-A 'vintage look' moto is not going to be used off-road.
2). As a pedal-less "electrical bicycle" these are mostly limited to 20mph, not 15mph .
Not sure if pedals are required to qualify as such.
Again. This may change.
3). Any "electric moped" at least here in Michigan would be limited to 30mph.
Same registration and lower insurance, but no D/L license endorsement I think. That might be a selling point.
Other states might be the same if your plans are to go big...
https://www.michiganautolaw.com/blog/2023/06/05/michigan-moped-laws/
"
Jun 5, 2023 ... Its top speed on a level surface is 30 mph."