Linkable Profile Fields

i'm looking for a why to link a field selection to another field. example: user selects motorcycle from vehicle type and it should only shows body style as sport, cruiser, offroad, ect. or they choose car for type and it only shows body type as hybrid, sport, ect. and also when they pic a make it only shows models that are related to that make example: they pick honda and it only shows honda makes. any ideas?