If we wanted exercise we wouldn't put some much time, money, blood and tears putting motors on our bicycles.... We would just ewww peddle(scary thought)
Looks like he needs more aggressive tires, my little 36V e-bike has deep 2.4" knobby's , I was going through some pretty heavy stuff the other day no problem. On low power setting the e bike is almost like a jeep.
Now it's melting, little black bike still chugging through it no problem. Diverted off the trail to the city on the way home, no sense going swimming this early in the year