Louder engines has sexual response!

A new study in the UK confirms that women like fast cars, but
apparently it's not the sexy curves of a Lamborghini, Maserati or Ferrari that
turns them on. Researchers discovered that it's actually the loud sound of their
engines revving that gets a woman's motor to hum. The study was conducted with
40 participants that included both men and women who were played recordings of a
Maserati, Lamborghini, Ferrari and Volkswagen Polo engine. Afterwards they got
their saliva swabbed and analyzed for the presence of testosterone. A higher
level of the hormone in their spit indicated that the subjects were more
aroused, and the results revealed that 100% of the female participants
experienced a big jump in testosterone levels after listening to the Maserati.
Chances are the Maserati engine was actually sourced from Ferrari, but we don't
know if the results after listening to the Maranello mill were identical. And
what happened after participants heard the Polo's wheezy motor? Testosterone
levels fell across the board.
In a similar study they performed the same test with motorcycles. Test
results indicate an overwhelming sexual response was indicated in women that
where passengers on a motorcycle with a loud exhausts system installed. Unfortunately,
when the males (drivers) were tested for similar testosterone levels the levels
of testosterone were reduced significantly below that of the female. Therefore
sex drive for the female passenger increased whereas the males significantly
decreased. Researchers suggest that the male prostate and testicles are
being overly stimulated because of increased vibration. Additional tests
are being performed to determine if partial sterility can be induced as a result
of excessive vibrations induced by noise at the seat.
Research test would suggest that bikers with girlfriends are more likely to have affairs with non-bikers.