Not to start a flame war, but please go through the following link on Wikipedia, which gives some details about an "elk test":-
Moose test - Wikipedia, the free encyclopedia
You'll notice that the angles in the diagram are certainly LESS than 140 degrees, and the speed mentioned is 70-80 km/hr, in the best cases.
If you've been executing such turns at such speeds, over "years and years" successfully...I can only say "aap ke saath aap ke waalidein ki duaein hain". Please...do NOT make such sweeping statements about this-or-the-other vehicle being capable of executing far-fetched manoeuvres, which can have dangerous and/or fatal consequences, for impressionable minds.
Anyways, this is my last post on this thread. Best of luck.