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For years, Tesla relied on a vision-based system for their driver-assistance technologies, which led to the elimination of radar and ultrasonic sensors in their vehicles. Elon Musk and other prominent figures at Tesla identified sensor fusion issues between the radar and vision systems as a challenge, ultimately deciding to discontinue the use of radar entirely. Critics of this bold move often suggested that a vision-only approach could never provide the necessary safety and efficiency. However, the new refresh challenges these notions, indicating that Tesla's advancements in technology have paved the way for a new understanding of radar's role in vehicle safety.