The immediate question is: if they are more efficient, why aren't all disciplines using these?
The article doesn't say! It suggests in passing that Triathlon has different rules because it doesn't allow "drafting" (Which I'm guessing is something related to team-riding to reduce air resistance, but the article doesn't explain what it is). Are there any rules prescribing (say) that a tour de France bike must use a normal (double triangle) design? Or is that just used because a traditional frame is optimal for weight rather than aerodynamics?
The article doesn't say! It suggests in passing that Triathlon has different rules because it doesn't allow "drafting" (Which I'm guessing is something related to team-riding to reduce air resistance, but the article doesn't explain what it is). Are there any rules prescribing (say) that a tour de France bike must use a normal (double triangle) design? Or is that just used because a traditional frame is optimal for weight rather than aerodynamics?