I'm using my voice for cars. It's works well and it's always ready to use. And, yes, training is needed.

@PaulH Yes, the people like Wiggo or Froom needed protection on the most of the parts of the climbs they did, but in general for speeds below 30 km/h you not need something specially aerodynamic. The racers riding in upright position. The aerodynamics at lower speed mostly neglectable.

@Ӎσᶎ it looks like tricycle, not a bicycle for me. Yes, tricycle more stable in some conditions, but it's terrible in turns. I'm not against velomobiles and tricycles, it's just different sports.

@arne The UCI are bureaucrats, it's true, but UCI rules all about safety in race. All of the kinds of recumbents and super slick TT bikes good only on ITT on flats and extremely dangerous on group rids and in mountains.

@arne how about climbing on recumbent? Is it rocks?

Actually TT and TTT road bikes do have some aerodynamic elements.