I'm thinking of switching gears since I already have an efficient car it doesn't save much money to make it more efficient. I have missed having a truck for a long time. What I was thinking was to get a good condition truck with part time 4wd and remove the rear driveshaft and differential to put a large Tesla motor in the back. I would be able to use the gas motor for more power with the 4wd activated and use it as a range extended vehicle when the battery died. I'm thinking that the pickup makes sense because there's a huge amount of space for batteries in the bed and it's pretty wide open so it should be "relatively" easier to do than a small car. A plus is I could use a large amount of recycled laptop batteries in parallel to keep costs down since room isn't as much of a concern especially with a 6 or even 8 foot bed.