Who knows about car hauling trailers

I want to goto the track more this year, The Tail of the Dragon, and drives and well my Diablo is a POS and it cost too much to waste valuable reliable miles on long boring highways to get there. And sadly its actaully cheaper to buy the trailer than the depreciation and repairs for the car than half the wasted highway miles cost me.
btw, the Diablo and NSX are like 14.5 ft long (Diablo 174.4", NSX 174.2" ) so Ill have plenty of extra room

I like these:

http://indianapolis.craigslist.org/rvs/995161452.html

http://indianapolis.craigslist.org/for/994250714.html

any good? recomendations........