Meet the man who built a bionic arm for a 7-year-old
11:46pm PDT - March 31st, 2021 robert downey jr - CBS NewsLimbitless Solutions co-founder Tyler Petresky created a bionic arm that actor Robert Downey, Jr., hand-delivered to a 7-year-old boy. Vladimir Duthiers and Kristine Johnson talk to Petresky about how he linked up with "Iron Man."