During the period after WWII, Model Bs and 18s were frequently rodded. This continued into the 1960s on a large scale, as noted in the hit song and as the pivotal street racing car in the film American Graffiti. Today, the roadster and coupe are the most sought after body styles, as these were popular for street rods and hotrods; unmodified examples have become rare. Since the 1970s, 1932 bodies and frames have been reproduced either in fiberglass or lately in steel, which has helped resolve sheetmetal shortages, and increased the number of rods being created or restored. These are often very expensive, and a typical show-quality car may sell for $60,000 or more; this is also ironic in that hot-rodding had its origins in young men buying cheap and plentiful 20+ year-old cars for their low cost and modifying them for higher performance at low cost.