As Cannon is approaching Clark Matthews' house, he parks in front of a large truck, with five cars parked across the street. In the next shot as he gets out of his car, the black truck and four of the cars across the street are suddenly gone.
A bomb is planted in Cannon's car that detonates just after he manages to pull over and jump out to safety. There were two bundles - six sticks of dynamite in total - that not only should have blown his car into bits and pieces, but would have also left a sizable hole in the street. But there was only a cloud of smoke (no fire) and even the windows were unscathed.