Part 4/9:
An interesting aspect discussed is the development lifecycle of these limousines. Each vehicle is retired after a certain number of years, typically coinciding with new presidential inaugurations. Interestingly, when they are taken out of service, they are destroyed rather than donated or sold—this is due to their highly classified nature. The agents also share that the design process can take several years, and both the Secret Service and General Motors collaborate closely to ensure all security features meet stringent requirements.