New SRAM Torpedo Fixed/Free Hub

Because why engineer an internal freewheel mechanism and then screw a fixed sprocket on the other side, you still have to take your wheel out. That involves using a tool!!!..
where as turning a screw in the hub only involves turning a screw with a tool...

A) Is this really saving much effort for the weight penalty + complexity?
B) Should'nt folk be carrying said tool for chain adjustment anyhows?

Seriously though, in theory if there was a handle bar mounted lever that changed between the two it would be genius, i mean what's the problem with running a back rim brake (unless you have wooden rims)?

TBH I agree that rim brakes on the back are a lighter, cheaper, and an adequate alternative to a disc brakes (90% of the time at least).

Just looking for a reason really...

No coaster brake;
no disc mount; and
no handlebar mounted switch.

= Heavy and overly complex gimmick component