Image Credit: StacheD Training / YouTube.Most of us assume that if a vehicle isn't running, isn't charging, and isn't even being looked at, it's about as dangerous as a lawn chair. That assumption took a hit in Troy, Michigan, on July 12th, when a 2026 Chevy Silverado EV went up in flames sitting in a driveway. The truck hadn't moved in two weeks. Nobody had touched it. And yet it turned into a four-hour ordeal for the local fire department.The Troy Fire Department, which is the largest volunteer department in the state, received the call around 3:40 in the afternoon after someone spotted smoke from a nearby park. A second caller cleared up the confusion fast: it wasn't a house, it was an EV parked about 15 feet from one. Crews knocked the fire down quickly with the first hose line, which is standard for any vehicle fire, gas or electric. The hard part was just getting started, according StacheD Training. Once the visible flames were out, the battery pack, a hefty 205 kWh unit weighing around 3,000 pounds, was still deep in thermal runaway. Unlike a gas fire, there's no simply putting this out. The cells are stacked in a double layer, sealed inside a steel tray with a steel cover, which is great for crash protection and terrible for anyone trying to cool it down from the outside.AdvertisementAdvertisementHere's the twist that makes this one worth talking about. The family had been overseas on vacation and got an OnStar alert on June 28th warning them about a lithium-ion battery issue and telling them to get it to a dealer. Tough thing to do from another continent. They landed back home that same afternoon, and hours later their truck was on fire in the driveway.Why You Can't Just Hose Down a Battery FireFirefighters used a thermal imaging camera to check the pack's temperature every 30 minutes, pairing it with short bursts of cooling water.That sounds contradictory since the water can't actually reach the cells through all that steel, but it pulls heat out of the surface layers and buys time to read the trend. Rising temps meant the runaway was still active. Falling temps meant they were getting closer to done.The Water Bill Alone Is Something ElseA typical car fire uses around 500 gallons. This one needed a hydrant hookup and roughly 15,000 gallons every time crews ran the blitz fire nozzle in short bursts.AdvertisementAdvertisementFour hours in, the pack was still lightly smoking, and crews made the call to cool it enough for transport rather than wait it out completely.Towing an EV Fire Isn't Like Calling a Regular Tow TruckCrews cooled the battery from underneath and flooded the cabin to cool it from the top before loading it up, then followed the tow truck to the yard with an engine in case things reignited.Once there, it had to sit isolated with nothing combustible within 20 feet, since stranded energy in these packs can spark trouble again days, weeks, or even months down the road.An Unanswered Question Worth WatchingNo official cause was listed, which is normal for vehicle fires since departments rarely have the resources to dig deep unless there's a fatality or major exposure damage. What stood out to the responding crew was stumbling across other owners online reporting battery failures under 1,000 miles. Whether that adds up to isolated bad luck or something GM eventually addresses with a recall remains to be seen.AdvertisementAdvertisementThe bigger takeaway that applies to any EV owner: if your vehicle sends you a battery warning, it's worth taking seriously and acting on quickly.If you want more stories like this, follow Guessing Headlights on Yahoo so you don't miss what's coming next.