> I'm not sure if this is
> still the case today, but in years past, the teams had to carry their
> own parts, supplies, etc., in their race vehicles. So the teams
> created monster sized "race trucks" which had to compete and also
> carry repair parts, etc.

In '84 when Porsche entered the first 4wd 911, they entered two
cars.  In typical Porsche fashion, the first car was the "race"
car and the other was packed with spares and driven by mechanics--
to support the first car.  They came in 1st and 6th--typical Porsche
fashion!  ;-)

                                Richard A Jones
                                Boulder, Colorado