FILE - In this Saturday, Oct. 10, 2015 file photo, Alex Zanardi, of Italy, rides during the cycling portion of the Ironman World Championship Triathlon, in Kailua-Kona, Hawaii. Race car driver turned Paralympic champion Alex Zanardi has been seriously injured again. Police tell The Associated Press that Zanardi was transported by helicopter to a hospital in Siena following a road accident near the Tuscan town of Pienza during a national race for Paralympic athletes on handbikes. The 53-year-old Zanardi had both of his legs amputated following a horrific crash during a 2001 CART race in Germany. He was a two-time CART champion. (AP Photo/Mark J. Terrill, File)

In this photo taken on Thursday, Sept. 15, 2016, Italy's Alessandro "Alex" Zanardi, smiles after winning the silver medal in the men's road race H5, during the 2016 Paralympics Games, in Rio de Janeiro, Brazil. Race car driver turned Paralympic champion Alex Zanardi has been seriously injured again. Police tell The Associated Press that Zanardi was transported by helicopter to a hospital in Siena following a road accident near the Tuscan town of Pienza during a national race for Paralympic athletes on handbikes. The 53-year-old Zanardi had both of his legs amputated following a horrific crash during a 2001 CART race in Germany. He was a two-time CART champion. (AP Photo/Mauro Pimentel)

FILE - This Saturday, Sept. 15, 2001 file photo shows Italian driver Alex Zanardi sitting in his car as it breaks up around him after a crash with Canadian driver Alex Tagliani during the CART car race at the Eurospeedway Lausitz in Klettwitz, eastern Germany. Race car driver turned Paralympic champion Alex Zanardi has been seriously injured again. Police tell The Associated Press that Zanardi was transported by helicopter to a hospital in Siena following a road accident near the Tuscan town of Pienza during a national race for Paralympic athletes on handbikes. The 53-year-old Zanardi had both of his legs amputated following a horrific crash during a 2001 CART race in Germany. He was a two-time CART champion. (AP Photo/Eckehard Schulz, File)

In this photo taken on Saturday, June 15, 2019 file photo, Alex Zanardi takes the catwalk during the Emporio Armani men's Spring-Summer 2020 collection, unveiled during the fashion week, in Milan, Italy. Race car driver turned Paralympic champion Alex Zanardi has been seriously injured again. Police tell The Associated Press that Zanardi was transported by helicopter to a hospital in Siena following a road accident near the Tuscan town of Pienza during a national race for Paralympic athletes on handbikes. The 53-year-old Zanardi had both of his legs amputated following a horrific crash during a 2001 CART race in Germany. He was a two-time CART champion. (AP Photo/Luca Bruno, File)

FILE - In this Saturday, Oct. 10, 2015 file photo, Alex Zanardi, of Italy, rides during the cycling portion of the Ironman World Championship Triathlon, in Kailua-Kona, Hawaii. Race car driver turned Paralympic champion Alex Zanardi has been seriously injured again. Police tell The Associated Press that Zanardi was transported by helicopter to a hospital in Siena following a road accident near the Tuscan town of Pienza during a national race for Paralympic athletes on handbikes. The 53-year-old Zanardi had both of his legs amputated following a horrific crash during a 2001 CART race in Germany. He was a two-time CART champion. (AP Photo/Mark J. Terrill, File)