Panasonic is adding another production line to the massive factory it operates with Tesla in Nevada, an expansion that will increase battery cell capacity by 10%.

The Sparks facility, dubbed Gigafactory 1, is the centerpiece of Tesla’s plan to expand global battery capacity and reduce the cost of electric vehicles. Panasonic has been its most important partner in that project, which, based on a recent agreement, should last until at least 2023.

Tesla and Panasonic initially planned for the Gigafactory to have the capacity to produce 35 gigawatt hours of batteries each year. That goal was achieved with 13 production lines. This latest expansion, which was first reported by the Reno Gazette Journal and confirmed by TechCrunch, will add a fourteenth line.

There are advantages to having a vehicle with instant acceleration. Stop lights become more fun, and occasionally, it’s equally to surprise some high-performance gas cars with a sudden sprint. At times, though, this instant acceleration becomes a safety feature, as recently proven by Tesla owner Daniel Spalding, who avoided a potentially nasty crash by a hair’s breadth thanks to his Model 3’s torque.

Spalding, who has been documenting his ownership experience in his YouTube channel, recently shared a rather tense video that he recorded recently. The video was brief, but it featured something that no driver ever wants to see from the rear — a fast-approaching car that’s not decelerating enough. Usually, incidents like this end up with both cars being damaged significantly. Some drivers and passengers may even get injured.

Fortunately for Spalding, his Model 3 can access its full power when he floors the accelerator. In his video’s description, the Model 3 owner noted that traffic in front of him came to a sudden stop, and as it turned out, the car behind him — what appeared to be an Acura Integra — was clearly not paying attention. When he realized that the car behind him was about to hit him, Spalding floored his Model 3’s accelerator.