Great ideas, but sadly the auto makers purposefully make many DYI repairs a thing of the past.Here's an EV that rednecks would buy ...
A gas-electric mid-size similar to the Chevy Colorado, $25,000 MSRP for RWD, $30k for 4WD. Towing capacity should easily hit 10,000 lbs. with the electric drive, payload capacity a quarter-ton, more than enough for general ranch work. Shitcan the expensive V6 engines and just throw in a lightweight rev-limited two cylinder, two-stroke to keep the EV capacitor-battery system charged and an option to use it as a small generator for welding and power tools. The time-temp-turbulence optimization should sail through emissions requirements, lessen the need for a lot of heavy steel in the engine box, keep the price down. Enough plug-in capacity for 50 miles which would mean a small battery and a cheapish super-capacitor to buffer the EV charge, and then the gas engine can kick in, with a 10 gallon tank for unlimited milage at any small-town gas station. Repairs should be dead easy, just pull the little engine when needed, it shouldn't weigh much more than 150 lbs., keep the electronic controls easy to fix, mostly module swaps where possible. Build a reputation of DIY, user repairs, make the money in aftermarket parts rather than the dealer service network.
Build them in Canada-USA-Mexico, call it the Chevy Sheridan. Bench seat up front with cheap saddle cloth covers, steel wheels, AM/FM standard, with the now obligatory back-up camera. The cab should be accessible enough for any ranch-hand to get laid in there as needed but not comfortable enough to get pregnant.
And a secret weapon ... make quarter glass vent windows standard. AC and power windows can be options, but rednecks love those quarter glass vent windows, they'll do anything to get them. Directs the cooling air where it is needed, to the nutsack.
The Dealers make all their money on service.
And don't get me started on "specialty" tools. Gee, lets make a fuel hose connection that requires a special tool to undo.
Planned obsolescence, dealer profits, design by accounting, will always trump the environment, ethics or even common sense.
Follow the money... its always been, and likely always will be the primary motivation.