I will say not a good idea to drive in such a fashion . One could lose control. It is also a black eye for the company. Most important is that it is not it safe.
That said ,those who have said they call those numbers let me ask.
If everybody ,including you ,had a phone number on there car how many calls would you get?
You might say none ,but I bet you would be surprised at how may you would actually get.
We get calls everyday . Most are blown off . In the case of speeding we have gps that can be historically looked at verifying such behavior.
In the case of cutting someone off all driver fail ay times to see someone . That's where the term defensive driving comes into play. So many drive offensively it's like a competition .
I drive a commercial vehicle ,a one ton van ,been doing so for 25 years . Ive been called in on just a couple times with zero consequences.