Explorers/Headscratchers


 * The Applied Phlebotinum of the film is a circuit capable to generate a force field which can be translated and rotated with a computer. On the other hand, the so-called "Thunderroad" was a hunk of junk that did not provide any function whatsoever. So why did the kids need to steal the Thunderroad before going to space? They could've just sat inside the forcefield with the computer and the battery, and they would've experienced a much more spectacular 360° view.
 * They're kids, making cool things without necessarily thinking about the practical aspects is what they do.