I have had several small-wheel (16 and 20 inch) foldup bikes and was
less than satisfied
with either. I now have a Bazooka Navigator 26" Aluminum bike with full
suspension - and
consider it the best I have seen. Tiny it is not, but with the foldup
features (frame, pedals
& handlebars) it will fit in the backseat of the plane or the trunk of
my car. Bazooka also
has the Dakar model which is similar but without the suspension. You
can find either
listed frequently on eBay, and they usually go for $300 - $400. You
can also find them on
numerous websites (try Froogle), but the prices are usually north of
$500.

West Marine usually has several types of foldup bikes in stock. Also
check out www.airportshoppe.com.

David Johnson