i suppose for an aircraft engine there are gears ?
let me guess...15 forward gears?
whether or not i can drive or not it doesnt matter...
take a look at racing engines, wheher F1 or not. do u see them
driving under 60? or is their RPMs in excess of 10k? so much so
that they have to change engines very frequently?
btw heard of something called turbochargers or supercharges? or do
u need www.google.com to explain to u?
u dont need a racer to tell u ppl change gears at 3000rpm do u? or
ppl drive at 60kmh? 
ok then u tell me, when u race, when do u change gears? or do u
have a licence as well? 
the reason why i didnt take driving lessons is because there is
only 1 car at home and 4 licences? for wht.
going to sch is so convienient for me, i can just hitch a ride and
while going there i can sleep or do something else. i have
juniors,classmates and friends in school who either have a licence
or are taking the exams now.
in case u didnt know, there are ppl who may have a licence but
choose not to have a car because they can rest and not face the
stress when there is a traffic jam??