You're right. I will point out that the 15MPH limit is generally a legal restriction as opposed to a technical one. The Juiced Bikes Cross Current S costs $1200 and can go 28mph with pedal assist. It's not inconceivable to have a new form factor that can fit another person and double (or triple the price).

$2000 is probably aspirational. What I'm asking will likely cost like $4000. The problem with that price is that you can get a very nice 50cc gas scooter for $4000 that will likely be better in most ways.

The Cross Current S costs $1700 and has a much stronger electric motor than the previous Cross Current. You're probably referring to the Cross Current Air which comfortably cruises at 24-25 MPH without heavy pedaling.

(source: waiting for my Cross Current S order to be delivered)

Ah you're right. Yeah, I was referring to the Cross Current Air.

Let alone, speaking as someone who has crashed going ~25mph on a bike, A LOT of safety considerations to take into account.