The learned Judges have observed that the expression 'use of a motor vehicle ' covers a very wide field, a field more extensive than which might be called traffic use of the motor vehicle and that the use of a vehicle is not confined to the periods when it Was in motion or was moving and that a vehicle would still be is use 34 even when it was stationary The learned Judges were of the view that merely ' because there Was interval of about four and half hours between the collision of the petrol tanker and the explosion and fire in the tanker, it cannot be necessarily inferred that there was no causal relation between earlier event and the later incident of explosion and fire and that the earlier collision if not the cause was at least the main contributory factor for the subsequent explosion and fire in the tanker in question inasmuch as the tanker was carrying petrol which was a highly combustible and volatile material and after the collision the petrol tanker had fallen on one of its sides on sloping ground resulting in escape of highly inflammable petrol and there was grave risk of explosion and fire from the petrol coming out of the tanker and the tanker was allowed to remain in such a dangerous condition for hours without any effort being made to prevent such great hazard of fire and explo sion from petrol escaping from the tanker.