It’d suck as a mountain bike due to the weight and the fact that the torque off even that peashooter engine would likely make oatmeal of the rear hub in about 3 minutes. It’d suck as a moto due to the hub thing, and the rims. And the forks. And the tires. And the brakes. And 18 other things of your choosing. It’d be fun to fetch a six pack with, I’ll give you that.