Gas up your Cheverolet to see the USA! Coming soon to a US state near you, per Geocache Talk Network:

Cache Odyssey is an exciting project aimed at creating the nation’s first fully accessible set of GeoTours, where every geocache is thoughtfully designed to be handicap-accessible.

There will be one Cache Odyssey cache in each US state, similar to Cache Across America.  Each cache will be a Letterbox Hybrid with a unique stamp (collect all 50), will be a T1, and will be size Regular or larger. They say that "all are going to be amazing". For the statistically addicted there will be a leader board so you can follow the obsessed on their hunt or check your standings. Leaderboard Link

Each cache is also included in one of 6 GeoTours divided up by regions, so you can collect 6 new GeoTour souvenirs. There is a rumor that there will be a 7th souvenir for those who collect all 6 regional souvenirs.

All of the caches will publish on December 29th at 7pm CST, so start your engines