yeah, I saw it as well. from what I gather, it is a manual tranny with VERY beefed up synchros and closer gear ratios, allowing you to shift "clutchless" on the move with no probs. Still need the clutch for a dead stop however.
I've got a buddy with a box like this in a 10 second Subaru. Hard to learn how to drive. You have to pull it out of gear as you lift your foot a bit, so the force on the dogs balances, match the engine speed and quickly shift into the next gear. They just refer to it as a dog box here (cos all the gears have many large dogs). A lot like shifting on a bike without the clutch I guess... you can do it with close ratios without too much wear, but downshifting is bad news for the synchros (same reason why you double clutch a little when heel and toeing).
Are you referring to something like a Quaife or Hewland sequential tranny? If so, they are not synchromeshed trannies, they are straight cut dog gears (which makes them very impractical for the street). It is far from being an automatic tranny. All of the serious Le Mans and ALMS teams use them.
this tranny is designed 4 road racing. it is just like a jerico tranny in a winston cup car. it has no synchros and utilizes dog rings. yes u still use a clutch with this type of tranny. the main benefit is that the tranny will last longer under the abuse of road racing. u have over 200 different gear combos in these trannies. they only hold 2.5 quarts of lube and they are rated to over 1000 ft lbs. of torque. check out www.jericoperformance.com