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AlphaLead said:
to me, that just looks like they really don't need 7 gears =\
I thought they wanted 7 gears to get more overlap in each gear; not to obtain a higher max speed =\
You have to remember that the car has 8250 rpm at its disposal. So I would guess that 155mph = ~8250rpm in fifth, = ~7000rpm in sixth, ~5800rpm in seventh. Its made to able to cruise comfortably at 155mph.

Take the SLR for example. Its has 5 gears and a top speed of 208mph.
 
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