TVR Cerbera Speed 12

I am wondering if winning the TVR races in Prof. mode unlocks the TVR Cerbera. I have plenty of money and I have won over 50% in game status but I havent tried the TVR challenge yet because I hate to put all the money in the TVR speed 6 and all thetime to win the races if it wont unlock the Cerbera. Also, If you have the Cerbera, How is it? Is it worth my effort to get it. I have the Formula one that I won in one of the Endurance races and so far it really rules. But the Cerbera handled great in GT2 and I think it looks great in GT3.
LET ME KNOW
 
Well, I have the Tuscan Speed 6 and Speed 12.
The speed 12 is FAST.  Not as fast as a 1200mph Escudo mind you, but fast.  Its a great car, hard to control, but fast.  

The Tuscan Speed  is an AWESOME car.  It can run with almost any car in the game.  I beat the professional GT world challenge with it.  (wasnt easy)
 
Seems like those cars can haul some @$$.  I wanted to win one, but then I forgot which race to race in.  Oh well.  When looking at the specs, it looks like it is really nice...
 
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