41. Doodlebugs sometimes pulled an unpowered trailer car, but were more often used singularly. 42. A DMU car could also pull two unpowered coach cars in addition to itself. 43. Class TTC is unpowered , it is equipped with a pantograph and a restaurant. 44. Lifting bodies were also developed using unpowered prototypes. 45. Wolfkeeper also proposed a merger with unpowered aircraft and within hours began implementing it. 46. In 1904, four unpowered trailers were delivered by HaWa and numbered 20 24. 47. Only electric or unpowered water craft are allowed. 48. J . Y . Watson later admitted that this was in an unpowered glider. 49. But an unpowered or " dead stick " landing is tricky and dangerous. 50. These sealed, unpowered transponders were placed at intervals of no more than 1 km.
