[Mean]

pawn Code:

new allvehicles[180] = "Airplanes\nHelicopters\nBikes\nConvertibles\nIndustrial\nLowriders\nOffRoad\nPublic Service Vehicles\nSaloons\nSport Vehicles\nStation Wagons\nBoats\nUnique Vehicles\nRC Vehicles\nTrailers";

You need to declare a string size.