Silicone speed limiter

I know that I've mentioned the boring aspects of the drive north in passing, but there are other things, that on reflection, need mention.  After all, travelling 4000 kms in total is a big part of the holiday and trip in general.  There is some really pretty country in this part of the world and part of this is the hills and mountains that form a large part of eastern New South Wales.  The Wizard liked the winding roads.  I suppose it was a relief after the plains where you could drive 20 to 30 kms at a time in a straight line without deviating at all.  However, driving tight bends in a heavy van is a different proposition than riding the same bends on a motorcycle and the Wizard seemed to forget this.  75 kph around a 45 kph bend is not fun for a passenger, and I had to put a stop to the fun when I almost got piled up against the side of the van.  I mean it was serious.  I could have broken a nail!  So a slap to the back of the head was in order.  The Wizard used to say that his wife was his organic speed limiter in days gone by, so I suppose she has just been replaced by me.  Fun is all well and good, but we have to keep it safe, yes?