As one of the best known Chinese historical figures throughout East Asia, Guan’s true life stories have largely given way to fictionalised ones, most of which are found in the historical novel Romance of the Three Kingdoms or passed down the generations, in which his deeds and moral qualities have been lionised. Guan is respected as an epitome of loyalty and righteousness.
After Lü Bu‘s death, the Red Hare (war horse) came into Cao Cao‘s possession and he gave it to Guan Yu later.
This is my take on Guan Yu riding a fixed gear bike instead of Red Hare. I believe Guan Yu still look pretty bad ass with this bicycle and his Green Dragon Crescent Blade. R.E.S.P.E.C.T