Lol ! I always feel sleepy in class, so boring! Sometimes i even
fall asleep during lessons.
Let alone driving. 
Ok, i even asked my dad now, i asked him " If u are a BC, and you
feel super sleepy, would you go to the back of the bus TO SLP, or wash ur face to
perk urself up?" My dad replied loudly " Ofcuz wash my face larh!
If you go slp for just a mere 10mins, you confirm will feel even
more sleepy later on, and might even doze off while driving." I
trust him, altho he has not been driving for a long time, but he
has all the driving class. Btw my dad also work for SMRT (I cant
tell you what he worked as for some privacy reasons.) 