I honestly had no idea this existed. Originally commissioned by GM for Pope John Paul II’s visit to Mexico, it started life as a seventh generation Cadillac Deville. It’s roof was then lopped off, an elevated platform with a chair added, then wide doors with retractable steps and official Vatican seals.
Ultimately though it was all for nothing. Given the attempt on John Paul II’s life in 1981, he wasn’t permitted to use this popemobile in public; the Vatican didn’t want to take any chances.