@Tesla may have solved one of the biggest problems EVs face on a racetrack: sustaining performance lap after lap. In April, I sat down with @joejustice, who owns and runs WIKISPEED EV Racing (@WIKISPEED). He described what happens when he pushes an EV on track. Around 30 minutes in, the battery gets hot. Power drops. The car goes from racing to crawling. Six months later, @larsmoravy explained how Tesla is engineering the new Roadster to overcome that limitation. The changes start inside the battery: • Double-sided cooling. Coolant tubes on both sides of the cells give heat a shorter path out. • Aluminum cell cans. Less weight and better heat transfer than conventional steel cans. • One-directional coolant flow. Coolant enters cold on one side of the pack and exits hot on the other before being cooled and recirculated. This produces more uniform heat flow than the usual down-and-back arrangement. • A titanium upper plate. Thinner and lighter than the usual steel cover, with better thermal insulation. • Custom 4680 cells. Chemistry developed specifically for high power, combined with a pack architecture designed to sustain it. And there’s a bonus: the same changes that help the battery deliver power and control heat also help it charge faster. In @Hagerty's walkthrough, the target is 15–80% in about 10 minutes. Lap. Recharge. Repeat. That’s the goal. Now the production car has to prove it.