Here's a cool idea for a greenhouse.

Great!  If your local weather isn't cooperating you could just drive to a better place.  Autumn closing in?  Drive south.  I want to see which of us is the first to convert a semi trailer for this.  Rafed?

Nothing like taking your fresh veggies on the road with you. I wonder if he heats the cab of his truck with it in winter. Free energy at its finest ;) .

That triangular front edge is providing a large flat surface impeding airflow.
I would imagine the greehouse would implode at highway speed.

Tell your auto insurance agent. Well I was going down highway when all of a sudden "BAM!" this greenhouse T boned me!

Now you can water your plants and get your car washed at  the same time!!!!

Now that's a pick-up truck i would consider owning ;)

Wow now that's a pretty serious solution to always keeping your plants in maximum sunlight. Alaska in the summer and Key West in the Winter. Does it make it's own bio fuel?

If you live in a crowded town like me, it's impossible to build a greenhouse because all setback requirements. This is definately a solution. Since it's not a permanent structure, you don't need a permit.