Leader bikes, frames and questions (735TR, 720)

Saw these bikes outside Nike Store in las Vegas. Like the leader frame, guessing it's an old one.

Looking at the frames on Ebay, quite fancy one after seeing this one in the flesh.

see how the wheel is nearly touching the seat tube yet the axle is half way the track ends? design flaw right there. it's been pointed out earlier but this is a fine example.