Alien movie title?

[lightenup]

I need to find the title to a movie I saw years ago. It was very funny and involved two hippy kids(one wore striped bell bottoms) on their bikes..aliens landed and needed tetrahydrozoline to power their spaceship..the stuff in visine...any help??

[lightenup]

A little more..the movie came out, I believe in the early "80's, I can't find anything on Google..I want to watch it again sober...as I watched it in college..it was on TV late at night....and really bad, but funny...help please...

[Newt]

 Spirit of '76 (1990)

A comedy starring David Cassidy, Carl Reiner, Rob Reiner, Olivia d'Abo, Moon Unit Zappa, Tommy Chong, and the rock groups Redd Kross and Devo. Three time-travelers are sent back to July 4, 1776 but end up in 1976 instead.The time machine used in the film runs on a chemical that is found in Visine eye drops, tetrahydrozaline.

[lightenup]

Thanks, I'll have to check it out..that may be it...do you remember if Cassidy wore striped bell bottoms.....

[Newt]

Tetrahydrozaline wasn't definitive enough?     Stick around lightenup: you'll fit in fine!