Bicycling

...it's just that I wonder if all that would still be enough. A recumbent rider cannot stand on the pedals if he or she is about to run over a jaw-jarring pothole.
On the other hand, I likely am emphasizing all this too much. Heck, what about all the mountain bikers who have to deal with far more terrible bumps that even their suspension can't make perfectly smooth. Moreover, the M5 High Carbon Racer has been used for the famous yet long Paris-Brest-Paris brevet, as well as lengthy travel on all kinds of conditions on the Silk Road.