Depending on who you ask, the first traditional seatbelt debuted as a concept 70 years ago—happy birthday, king. Even though there’s a bit of controversy over when the first official seatbelt was patented (inventors Roger Griswold and Hugh de Haven applied for a patent in 1955), Volvo’s two-point, cross-chest diagonal belt was largely considered the first of its kind when it debuted in 1956.
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