do you like traveling? what kind of transportation you always use for traveling? I think we always use car, bus, plane or cruise ship for traveling. We must spend a lot of money for traveling with the vehicle above. What about the adventurous. They like natural condition. They don't like luxurious things. They like adventures place like mountain, forest. The usual vehicle is caravan cars. This is the easiest and comfortable car for traveling. How if this idea put in the bike. It must  big enough to applied caravan in the bike. There is an idea to put the caravan into bicycle and it work.  This called camper bike. I think this idea from the camping bike. Bike which modified as a recreational vehicle, We usually seen it in the car. This is for someone who like travelling and they don't want spend their money for hotel or motel. We can found it in china. I think this is great ide for backpackers.