41. Vehicles included the Oldsmobile 98, Pontiac Streamliner , Buick Special, and the Cadillac Series 61. 42. In 1948 160, 857 Streamliners were sold, accounting for nearly 66 % of all Pontiacs. 43. To break through that wall, racers enclose the wheels of lakesters within the bodywork to create streamliners . 44. The Cincinnatian was an iconic lightweight streamliner serving the B & O's Detroit line from Cincinnati. 45. In 1948 lightweight streamliner cars with four-wheel trucks began appearing, usually not more than five. 46. The bogie trucks for smooth riding : a refinement that the tenders of LMS and LNER streamliners lacked. 47. Sales of Streamliners totaled 128, 660 in 1947, or nearly 56 % of all Pontiacs sold. 48. The Milwaukee Road's " Hiawatha " trains were among the nation's finest streamliners . 49. One was the " Old Dominion ", a streamliner inaugurated in 1947 between Washington and Richmond. 50. Cab and carbody units are also more aerodynamic than hood units, and pulled many of the streamliner trains.