I know of several trucks that the speed limiter can be over ridden in cruise control.I have noticed a significant number of heavy trucks doing more than that in the last little while.
I know that in my car, 107 km/h indicated is 105 km/h actual, which is what the trucks are supposed to be doing. Most do ... but a fair number are doing more than that nowadays.
I'm guessing enforcement of this has slackened.