41. As such, nitro-powered vehicles are by nature expensive to maintain. 42. They might best be described as wildernesses where, within limits, powered vehicles are allowed. 43. Developments are thus slow at present and renewably powered vehicles very much the exception. 44. Driving one of the current hybrids is no different than driving a conventionally powered vehicle . 45. The companies haven't yet figured out how to make them as practical as gasoline-powered vehicles . 46. Three full-size steam-powered vehicles will be available for rides. 47. For the time being, that leaves battery-powered vehicles as the only pure zero emission offerings. 48. Gasoline-powered vehicles were phased out, leaving electric golf carts as the preferred mode of transportation. 49. Re-charging facilities have recently been provided for electrically-powered vehicles . 50. Starr had been hoping to market alternatives to gas-powered vehicles since the 1970s oil crunch.
