I found the not an e-bike offroad chimera/symbiote/moped/knobby tired bike for you. A mere $20,400 with an unwitting celebrity endorsement from Simon Cowell. Who broke his back in numerous places riding one.
Apparently it does 60mph and has gobs of torque for those with good throttle control and the fitness to stay aboard. All I can see is bad things coming about with a saddle fitted instead of something resembling a moto seat. Find a workaround for that and it might just be more fun than should be legal.