1. 地铁   glider   subway   scooter   streetcar, tram   Hint Half-n-half Clue   2. 喷气机   yacht   cruiser   jet plane   streetcar, tram   Half-n-half Clue   3. 卡车，搭便车搬运车   pickup truck, pick-up van   streetcar, tram   breakdown van, tow-truck   cruiser   Half-n-half Clue   4. 木筏   raft   streetcar, tram   jet plane   subway   Half-n-half Clue   5. 路面电车，电车   subway   glider   sailboat   streetcar, tram   Half-n-half Clue   6. 游艇   sailboat   breakdown van, tow-truck   yacht   streetcar, tram   Half-n-half Clue   7. 单轨铁路车   monorail   subway   streetcar, tram   sailboat   Half-n-half Clue