The popemobiles of Pope Francis

Desmond Boylan / AP

People cheer as Pope Francis approaches in his popemobile on the way to the San Cristobal Cathedral, in Havana, Cuba, on Sunday, Sept. 20, 2015. It appears to be a Peugeot compact.

Cliff Owen / AP

Pope Francis waves from inside his Fiat 500L as he departs the Apostolic Nunciature, the Vatican's diplomatic mission in Washington on Thursday, Sept. 24, 2015. Pope Francis prefers to ride in budget or compact cars compared with his predecessors, who rode in luxury. The 500L starts under $20,000.

Allison Shelley / Getty Images

Pope Francis waves to the crowd as he rides in a modified Jeep Wrangler popemobile along a parade route around the National Mall on Sept. 23, 2015, in Washington. The pontiff prefers more open, inexpensive vehicles to better connect with the people.

Steve Helber / AP

Pope Francis arrives in a Fiat 500L on Capitol Hill in Washington on Thursday, Sept. 24, 2015. The budget car with decent fuel economy, which starts under $20,000, stands out amid the fuel-chugging SUVs of the Secret Service.

Cliff Owen / AP

Pope Francis walks to his Fiat 500L to depart the Apostolic Nunciature, the Vatican's diplomatic mission in the heart of Washington, en route to the Capitol to address a joint meeting of Congress on Thursday, Sept. 24, 2015. Pope Francis prefers to ride in budget or compact cars compared with his predecessors, who rode in luxury.

VINCENZO PINTO / AFP/Getty Images

Young Catholics cheer as Pope Francis rides in his Korean popemobile, a modified Kia Sedona minivan, as he attends a Mass to conclude the sixth Asian Youth Day in Haemi, about 90 miles south of Seoul, on Aug. 17, 2014.

Steve Helber / AP

Pope Francis' Jeep Wrangler popemobile is more open than the "sardine" cans of his predecessors, who preferred to be fully enclosed by bulletproof glass.

Enrique De La Osa / AP

Pope Francis waves from his Peugeot popemobile in Santiago de Cuba, Cuba, on Tuesday, Sept. 22, 2015. Pope Francis left Cuba on Tuesday for his first trip to the U.S., wrapping up a four-day visit to the island with an appeal to the people to rediscover their Catholic heritage and live a "revolution of tenderness."

Susan Walsh / AP

Pope Francis waves from inside a Fiat 500L as he departs Andrews Air Force Base in Maryland on Tuesday, Sept. 22, 2015. This is the pope's first visit to the United States. When away from Rome, he rides Roman-American.

Doug Mills / ap

Pope Francis arrives in the popemobile at the Basilica of the National Shrine of the Immaculate Conception in Washington, Wednesday, Sept. 23, 2015, for the Canonization Mass for Junipero Serra. The latest iteration of the popemobile, which is used for parades, is a modified Jeep Wrangler.

Doug Mills / ap

Pope Francis arrives in the popemobile, a modified Jeep Wrangler with an open bed, at the Basilica of the National Shrine of the Immaculate Conception in Washington on Wednesday, Sept. 23, 2015, to hold a Canonization Mass for Junipero Serra.