https://en.wikipedia.org/wiki/Presidential_state_car_(United_States)
https://www.financialexpress.com/auto/car-news/the-beast-presidential-limousine-us-president-joe-biden-oath-46th-donald-trump-barack-obama/2175477/
https://yeahmotor.com/cars/presidential-state-car-facts/
https://leftlanenews.com/2017/09/24/the-beast-10-things-you-need-to-know-about-the-presidents-limo-80466/
https://en.wikipedia.org/wiki/Ground_Force_One
https://en.wikipedia.org/wiki/Motorcade
https://en.wikipedia.org/wiki/USSS_Electronic_Countermeasures_Suburban
https://www.independent.ie/world-news/middle-east/the-beast-breaks-down-again-obamas-limo-has-gas-malfunction-in-israel-29143996.html