Hmm I suspected this would be the line of reply - can you expand on the context of 'ruin'? Do you mean spoil the lines, don't get it near the water, abuse the drive train from towing?
I have just moved to the US and don't have a fleet of cars here (as you appear to - nice!!), difficult to get credit as my credit history from the UK counts for nothing here and no idea how long I will stay currently so reluctant to move money from the UK at this time. I was hoping for one vehicle for now to get by with and was hoping I could make the 6 do this without changing plans and heading more down the SUV route :-)