A bullet can have the same momentum as a truck if it is moving fast enough. Momentum is defined in classical physics as the product of mass and velocity. A bullet has a fixed mass, so by sufficiently increasing the velocity it can achieve the momentum of a truck.
If a truck has a mass of 5 tons and moves at 50 mph, it has a momentum of 100,000 Newtons. If a bullet has a mass of 1/2 pound, in order for it to have a momentum of 100,000 Newtons, it would have to travel at over 2 million mph.