My bother in law has a Juiced Rip Current S, with the performance upgrade it does 30mph on throttle, it'll probably go faster with pedal assist. I can test it later if you want.
I'll need to check what model it is, but it's probably the highest power one.
Technically not street legal, but nobody is going enforce that. Probably.
To guarantee the range you'd probably need a spare battery.
You can also put a rack on it to carry stuff and the spare battery.
I hate it cause its lethal, wasteful, and stupid.