I get that all the time driving the work truck, people sitting right up your rear, then go to undertake you as soon as you indicate to move over for them, people pulling in front of you coming up to a red light, not only is it suicidal for the driver of the car, but you damn near have a heart attack when you're trying to pull up 20t worth of truck and you're rapidly running out of room..
Shame it wasn't a truck load of PME's and SBIG cameras !