>After driving at about 75 to 80 MPH I pull over into gas station, shut =
>the motor off, and my Vanagon pees coolant, the good German kind, all =
>over the tarmac.  The overflow bottle, well, overflows.  Drive around =
>town or at lesser speeds and it's OK.

>1.  I was recently told not to drive that fast.  Supposedly the heads =
>get very hot.  This would explain a boil-over since the coolant is no =
>longer circulating.  Am I wrong to follow my Euro-school of driving?

The Vanagon owners manual (has anyone else read theirs?) says to let the engine idle for a minute or two before shutting it off, if you have been doing high speed driving.  This is to allow the engine to cool down and to distribute the heat more evenly.

Bill