a cluster of vehicles on the freeway, one in each lane, all driving the same too-slow speed, that are impossible to pass because they are positioned nearly side by side
Louie hated rolling roadblocks until one saved him from a speed trap.
Someone who is addicted to obtaining money and building wealth. A money addict and fanatic. Breadheads often work more than one full-time job, and some even participate in illicit activities to "obtain the bread".