Dien,

Thanks for another interesting idea...

And on that note...

Find a Problem...

Lots of medical research & information available to Help pre-sell...

Serious Riders, Your Bicycle Seat May Affect Your Love Life...
http://www.nytimes.com/2005/10/04/he...on/04bike.html

High-end Marketing & Services of specialized Bicycle seating...

Many inventors and companies to consider as suppliers...

Here's just a few...
http://www.realseat.com/intro.html
http://www.spiderflex.com/
http://www.thecomfortseat.com/

Another Huge Money making opportunity is investing in Electric bicycle companies and business ideas...

Including Sales, Servicing and setting up Local & national Rental depots...

Maybe with a Creative Advertising model built right into each unit... A Nice corporate and small business evergreen Money making tree...

It's going to be a long term Booming Green business to get into Early... Before it's too late...

Phil