Seated in the car with my wife at the wheel , the deflated tyre goes unnoticed during the time it takes to cover about 5km at normal speed manoeuvring curves and ascent . When we reach our destination, and stop the car for parking, someone points towards the deflated rear left side tyre . While we are cursing the unknown unseen guy who deliberately did so,when the car was parked on the road where we had gone visiting some relatives, a passer by comes and volunteers to replace the tyre ,if we have a step-in and the jack and the wheel-pana . In a few minutes the god- send replaces the tyre . While we profusely thank the nice guy, we are also left wondering about the two opposite sides of humanity .