The Jet Engine

An item that Thomas once tried to use, but ran the propellant down.

Original Use In The TTTE Universe
Thomas went to Brendam Docks to collect the jet engine from Cranky, who got huffy after Thomas told him to hurry up, and accidentally switched it on, sending Thomas rocketing off down the line and overtaking Gordon, only stopping when the jet engine ran out of fuel.

LOTM Storyline
It was later found abandoned out of gas washed up on the northern shore of France, much to the interest of Ulrich Stern. However, while he and the Lyoko warriors tried to fix it, he slipped and fell on the lever that started it, sending Ulrich zooming down the street with his friends trying to keep up. He was soaked when it finally ran out of gas again in a lake, and swam to shore just seconds before it quickly sank 130 feet to the bottom.