Tesla has been black balled by the rest of the industry. To use Tesla technology or partner with them at this point would be legitimizing them and it would be an admission Tesla has done something right and many years of justification about how Tesla is a flash in the pan that's going under next Tuesday will all go out the window.
Another facet is most of the car industry is locked in a battle with Tesla in US courts over selling cars direct. Technologically, most companies would probably be OK selling cars directs, but they all have 100+ year relationships with local car dealers most of whom have grown very rich. In some parts of the US, the richest people in the county are the owners of the local car dealerships. There are some chains of dealerships with many stores in many cities. State legislatures have complex laws that prevent car makers from selling cars direct because of abuses that happened 70 years before the internet came along.
The car companies are fighting these battles on the side of their dealerships in part because they have long standing relationships and in some places they would never sell a car again if they put the local car dealership out of business.
Car makers also use dealerships to move inventory off their books. By selling the cars to a middleman, they can surf small fluctuations in the market with little trouble. For example when the Bolt wasn't selling well last year, it was a couple of months before GM slowed production because they were able to push the extra stock off on dealers. Because the dealers are separate entities they can more easily survive a few dealerships going under because they can't sell enough cars.
The relationships between dealers and makers are different in different countries, but the only car makers that aren't also selling in the US are usually third world bargain car makers who either make cheap ICE or bargain EVs with relatively small batteries that wouldn't be superchargable anyway.
Car makers are in it for the profits (and enjoyment). They team up with each other constantly. Tesla has teamed up with Toyota and Mercedes Benz IIRC. GM has teamed up with nearly all automakers at various times: Ford, Rolls, Mercedes, Toyota, Honda, Isuzu, just off the top of my head.
There is no 'black listing' going on. If automakers are not using Tesla IP or DCFCs, it's not a conspiracy. It's economics. If any blacklisting is going on, it's in the reverse direction. Tesla will not allow franchise dealerships to offer their cars. They avoid licensing outside IP as much as possible. They won't allow second tier or even owner servicing without a fight. They fight against CCS, at least for now. The operate much like Apple Computers did in 1980, trying to isolate the brand. A Fiat EVSE will charge a Ford/Chevy/MB/BMW/VW/Nissan/Honda/Etc plug in car. Which cars will a Tesla EVSE charge? Teslas badged drivelines, not to include their partnership vehicles.
As far as dealerships go, Tesla effectively has dealerships. The owner of the dealerships is Tesla Motors. The fact a second tier exists with major automakers is controlled by law. How that will finally evolve is unknown at this point, but I do believe that Oregon is finally allowing some people to pump their own gasoline after 40 years so nothing is written in stone.
But back to the topic, the Chevrolet Bolt, it appears to be a typical Chevrolet:
Motor Trend recently compared the Bolt/Leaf/Model3LR. When they tested the actual MPGe on the Bolt it came up with 121 MPGe Combined on an EPA of 119 MPGe.
Tesla's 3LR recorded 104 MPGe actual on a 126 MPGe EPA combined.
The Leaf was was not tested.
This is not unusual. Most MFRs don't hit their claims when tested, with GM being the oddball.
Concerning 'compliance' rumors circling the Bolt Program, here's a good read:
GM races to build a formula for profitable electric cars If it's true (and GM is conservative when it comes to product claims), it would seem that compliance isn't on the radar for the Bolt team.
