Often times companies will pay for product placement in popular TV shows, particularly domestic car companies, but sometimes Japanese and Korean too. Usually they will sponsor an entire season. Usually all the principle good guys vehicles will be from that product line. They will pay for the placement and supply the vehicles. In return the cars are featured and often the screen writers are required to write lines and content to show off the car a bit. So GM is advertising the Bolt!
As a side note on the subject of cars in TV, my wife and I started watching this Amazon show called Goliath starring Billy Bob Thornton. We binged watched the 1st season and just started season two.
In the second season they introduce a new character that is smug, condescending, slimy hipster and not a good guy. He's a campaign finance guy for a mayoral candidate for Los Angels mayor and turns out to be one of the corrupt bad guys. When the screen writers wondered what kind of car this character should drive they came to the conclusion of Tesla Model S! I thought this to be funny because Los Angels is such a hot bed of Tesla ownership and they are quite common and very trendy there. I think Tesla owners are starting to get a stereotype attached to them like BMW and Porsche and some other brands have.
The show prominently shows off the car inside and out including the badging. I'm pretty dang sure Tesla didn't pay for this endorsement!