I've gotten great advice here (got talked out of the walk-in art trailer, but I did buy a trailer for transporting art)... but I like to keep things moving and try to think differently. I recently bought 27 - 48"x60" canvas for $10 each... and I'm thinking about "abandoning" 10 of them. I already practice art abandonment and leave smaller paintings in Ikea, grocery stores and gas stations... but nothing this large.
So here my plan (talk me out of it or not)... I'm painting ten of these right now, and I plan on leaving them in the median on a major street close to me the last weekend this month. The median is pretty wide and has trees that I can lean the canvases on (and lightly held with bungee cords). Basically turn the median into an art gallery. Each piece is different. I anticipate some will get taken home and some vandalized. Code enforcement is not real active on weekends so I don't think the city will get too involved. I could get fined of course, I guess the charge would be either littering or causing distractions for drivers.
I did abandon five 36x48 pieces in a city park last year for National Art Day, but that got me a letter from the parks department to " please find somewhere else to display your wares".