Toyota today announced that the Prius PHV plug-in will have a dedicated online ordering system, with "Priority Registration" beginning this Friday, April 22 on Earth Day. Signing up for Toyota's Priority Registration gives you, the customer, first access to an online ordering system when it becomes available later this year. Anyone can register at http://toyota.com/plugin .

On Earth Day in 2000, Toyota officially announced that the Prius would be hitting U.S. shores, along with pricing and purchase information. Hard to believe that it has been 10 years since "the Prius that shook the world" was introduced to the U.S. market.

Over the last 10 years we have seen the rise and fall of many hybrid cars, but none have been able to replicate the tremendous ascent the Prius has seen in the last decade. Toyota has now sold over 1 million hybrids in the U.S., and it's all thanks to the little car shown above.

Come Join us on PriusChat for a special Earth Day Live Chat with Toyota Prius Product Manager, Doug Coleman. The live chat will begin at 7:30pm EDT / 4:30pm PDT. If you're not a registered PriusChat member, don't worry, you don't need to be. Just follow the on-screen promptings to join the chat. Registered members, please use the same nickname in the chat as you do on the forums.

This is going to be a Q&A session regarding the 2010 Prius, so feel free to submit your questions once the live chat begins.  We'll try to cover as many of them as possible.

Toyota's Prius Team has created an Easter Egg hunt of their own on PriusChat.  In response to a thread theorizing that pricing would be announced at the New York Auto Show between April 10-19, Doug Coleman, Prius Product Manager for Toyota, replied: