I had never noticed before!

[captain_slinky]

If you are a teen in need of help with any type of non-conventional travel (Time Travel, Space Travel, Deep-Sea Exploration, etc...), the Science Teacher in your local Public High Scholl will just happen to be an EXPERT in that type of travel and will have been building a piecework prototype vehicle for said type of travel out of what appears to be household items. But of course he could NEVER let you use the vehicle because it's still untested! Also, there is no middle-ground for using the vehicle. According to the Science Teacher he can't let you use it because if it DOESN'T work, then it's gonna blow up and kill you. ANd that's not a risk he's willing to let you take.