Love it.  And the strong guy in red.  Butt,... this one looks faster.  I guess that's progress for the racers. Totally irrelevant for my rides.
There's watts of power
 visible in the old photos, today's watts have to be '
sleek watts'  to win a pro level TT.   3D printed components specifically fitted for each of the top riders does not hurt.  Going faster than the old guys is a fact, not a lie.  Nutrition, bike weight, position, disk wheels, altitude training, skinsuits, helmets, booties all have an effect - and frame designs, too.
View attachment 981226
edit - An American learned something new today.  My British ex-wife would never have used that one.
"but not the most offensive term in British slang" ... what a comment on the pejorative inclinations of a cultured(?) Nation!!!
Pappy always said humans are not bred to be gracious. 
Bellend is a British slang term that refers to the glans of the penis and is often used as an insult to describe a foolish or contemptible person. It is considered vulgar but not the most offensive term in British slang.