Can you see the common DNA in 3 different bikes?

A-bike
abikecentral.com/aboutabike.html

X-bike
mas-design.com/x-bike.html

Strida
mas-design.com/strida.html

Quoted from Mark Sanders, the designer of Strida:
Alex kalogroulis, was 1st a Student of mine at RCA/IC and later, he used to work for me when i did the X-bike (also for Clive sinclair) … so you can see some DNA in all 3 bikes.”