Meditating in a Tuk Tuk during Colombo rush hour traffic

It is incredibly difficult but not impossible. The main issues are the intense diesel fumes from the buses and the constant, jarring use of the brakes. You will not be able to hold a free-seated lotus pose safely because of the sudden stops. If you want to practice mindfulness, try open-eye breathing exercises while holding onto the safety rails. Wear a pollution mask.