Updated with video from reporters on-site at the bottom of the post! Late Sunday night, four Tesla Cybertrucks caught fire in a Seattle holding lot near 2nd Ave S & S Spokane St, just five minutes from the local Tesla dealership. Initially, reports indicated two burning Cybertrucks, but as the fire spread, the number grew to 4 Cybertrucks. Investigators have offered no details as to whether this was arson or another case of a Tesla Cybertruck bursting into flames spontaneously. See video from the scene in the full article.
That character could use employee diagnostic access into the cars as they are always on the Internet. SSH into them, get into the battery controller and do myriad things. Set the thermal management into permanent heat mode. Disable thermal management 100% for the next time the car is driven so it can’t cool the batteries (good for getting rid of pesky rodents like muskrats that try to live in them.) Mess with the charge controller in general so it overcharges, undercharges. You name it. All sorts of fun things one could add to that book depending on your plot.
Make sure while your character is hacking the battery controller though, that they set the car stereo to play Dragula by Rob Zombie at full volume. For effect.
These idiots were dumb enough to design Teslas like computers rather than cars, so a whole lot of stuff was designed like a crappy cell phone rather than the proven design principles of automotive engineering.