During a live-streamed event marking the first deliveries of the Tesla Cybertruck on Nov. 30, CEO Elon Musk played off a video showing the electric truck crashing into a barrier at 35 mph. “If you’re ever in an argument with another car you will win,” Musk said, triggering cheers from the audience. But safety experts aren’t quite ready to celebrate. Despite — or perhaps because of — Cybertruck’s stiff stainless steel body panels, questions are being raised about what it could do to pedestrians, bicyclists and other vehicles — and whether it can actually protect its own passengers.