Diplomatic immunity

I was driving along E18 outside Stockholm today at around 9:30 am, on my way to a customer meeting, when a complete maniac in a dark blue Volvo V70 2.5T almost hit me doing a poorly executed maneuver in which he squeezed in between myself, in the right lane, and another car driving in the left lane, only to continue his journey of insanity. The speed limit on this part of the road is 70 km/h and this complete moron was doing at least 110-120. Enough to lose your drivers licence and get sentenced to jail.

Why this insane behaviour, you might ask? Easy. The licence plates were blue and had the license number BT002B. In case you don't know, that spells diplomatic immunity. This raving lunartic could do whatever he want, speeding, causing accidents, killing innocent people, and there will be no legal reprecussions against him.

Now I do understand the reason for diplomatic immunity, don't get me wrong. In some countries a diplomat could risk all kinds of nasty stuff if he or she weren't immune to prosecution. However I do have a problem with this beeing a carte blanche for people like the driver of this Volvo to do whatever they want without there being any consequences.

How about any legal matters would be transfered to the homecountry of the diplomat, and he or she would be subject to his or her country's laws - by default? Sure the system opens up for that possibility, but how often do you actually see it being used?