As far as the heat goes you should be okay if you keep your pack open & provide lots of oxygen.
I agree with Chad.
Although I don't mind smoking a fruity flavor while driving. Feels nice especially with the sun shinin' & the wind blowin. But while biking... Not sure if thats the best.
& while walking around I could see it... But the actual concept of the traditional 'hookah' experience is to be enjoyed where there is a time set aside for it & for there to be no rush within the time period you are smoking. It is here for us for relaxation... But some people have different mindsets