Chronolocity by G.P. Avants

Twelve year old inventor Levy Roarke has always dreamed that one of his ideas would someday make history. Yet, he never dreamed that his Fizz-E-Drive engine would play a role in altering history.  Levy is transported back to the past where he lands in the middle of a time war that is being fought throughout history. One side, led by an eccentric time-traveler, Mr. Cross, wants to reboot the future by retraining important figures from the past in order to create a better future. While the covert A6 team attempts to keep the fragile time line in tact, imperfections and all. Both sets of time travelers attempt to convince Levy that he is the hero they need.  Levy is torn in two with whom he trusts. With the fate of time in the balance, Levy knows that no matter what happens no one will every look at history the same again.