Engine accelerates above throttle rpm

[neodemon]

The opposing torque comes usually from the wheels (tire friction), translating engine torque into car forward motion. There is no such thing as throttle_rpm.

It cant be from tire friction, throttle(or gas) => rpm relationship works on neutral gear too. According to torque curve if engine rpm is between idle and limit, then engine produces some torque. If it always have torque on neutral, then how can engine rotate at constant rpm (when gas pedal is in constant position)?