The Swiss Army Knife of trailers? A godsend for adventurous small car owners? A bright green blemish on the vast wasteland of asphalt we call an Interstate system? You decide. The SylvanSport Go Camper Trailer ($8,000) is unique in its versatility, as it weighs only 840 lbs., yet can pack up to a dozen bikes, kayaks, two dirt bikes, an ATV, or whatever form of transportation you require, while still functioning as a camper, with insulated bed platforms, a self-inflating mattress, and a secure entry — everything you need to hold your own private X Games in the woods.