Ok I personally have driven my vette  165MPH and have truly felt that speed,
and have driven a passat up to around 90 (LA freeways everybody does 90 when
clear or 25 when full of traffic) and did not feel near the control in the
passat at that low of a speed as I did in my 98 vette at that great of
speed.
Now your statement  "It's reasonably safe to drive 150-250 MPH in Germany"
is just plain stupid unless you have a full roll cage and a full harness
seat belt and helmet you are far from safe.
And the Autobahn is not very safe for driving fast either as there are a lot
of slow moving vehicles like tractor trailers on it as well, I'm sorry I
would not want to be coming up on a truck going 60MPH and me doing 150MPH
that would suck if he had to swerve.
http://www.car-accidents.com/pages/2005-accident_story/6-1-05.html

Autobahn speed limit facts.
Speed limits
Despite the widespread belief of complete freedom from speed limits (and a
lobbying effort that has the same influence and deep pockets as the American
gun lobby), some speed regulations can be found on the Autobahns.  Many
sections do indeed have posted limits ranging from 80 to 120 km/h (50-75
mph), particularly those with dangerous curves, in urban areas, near major
interchanges, or with unusually constant heavy traffic.  In construction
zones, the limit may be as low as 60 km/h (37 mph).  Also, some sections now
feature nighttime and wet-weather speed restrictions, and trucks are always
regulated .  Still, about half the Autobahn system has no speed limit, but
there is always an advisory limit of 130 km/h (81 mph).  This recommendation
is generally seen for what it is-- an attempt by the government to cover
itself without having to upset millions of Porsche and BMW owners (AKA
voters.)  However, if you exceed the advisory limit and are involved in an
accident, you could be responsible for some of the damage costs even if you
are not at fault.
http://gettingaroundgermany.home.att.net/autobahn.htm#speedlimits

I guess I would just like to end this saying 2 things
1st quit dissing the Vette if you don't like the car leave the group and
move onto another one, we like them.
2nd Unless you have experience in driving the actual cars (not on a f.cking 
game) then quit trying to argue with everybody, Hell I can read a book on
knee surgery and quote it to everybody and even do it on the computer
http://www.edheads.org  click virtual knee surgery its kinda cool, BUT it
does not mean I know diddly sh.t about it.
So go play somewhere else you have wore out your welcome here as far as I am
concerned.