Step 17: Make platforms to mount batteries. I'm going simple with 3/4" plywood. In the front the plywood is secured to the motor mount and a horizontal brace, in the rear bolted through the floor of the trunk. The only protection the batteries will have will be provided by the car and hood or trunk lid. My idea is to use polyester strapping to strap the batteries to the plywood. It will be about 200 pounds of batteries for each location.
There will be 14 batteries in the front and 16 in the rear.