Originally Posted by dorkypants

I seem to remember riders on Bromptons having completed Paris-Brest-Paris.

On a different tangent, there are also Youtube videos of riders on Bromptons doing BMX-style stunts.

Personally, I've passed huffing-puffing roadies on my 3-speed Brompton, as well as roadies on their latest and greatest weight-weenie carbon rigs on my 10-year old Air Friday. The motor counts a lot more than the bike.