Just write about what kinds of energy they have, what energy transformations they have when they stop, what kind of energy transformation a normal car has when it stops, what kind of energy is stored in gasoline, how else does a hybrid car store energy, and what energy transformation happens when a hybrid car uses its stored energy. There has to be cites to the information.
All applicants go through a series of tests that check their level of English and knowledge of formatting styles. The applicant is also required to present a sample of writing to the Evaluation Department. If you wish to find out more about the procedure, check out the whole process.