November 21, 2019 By Holly Cain NASCAR Wire Service DAYTONA BEACH, Fla. - Jimmie Johnson’s two young daughters Genevieve, 9, and Lydia, 7, introduced their father and his team owner Rick Hendrick to a sizable audience of Hendrick Motorsports teammates, Johnson’s family and friends and the motorsports media gathered outside Charlotte, N.C. Thursday afternoon. His children’s involvement in this important event was a fitting life-bridge for Johnson’s retirement press conference. The seven-time NASCAR Cup champion announced Wednesday that the 2020 season will be his last fulltime competitive run in the Monster Energy NASCAR Cup Series. His time afterward will instead be focused…