Jimmie Johnson to retire after 2018?

Will this be Jimmie Johnson's final year? Once you hit 40 you do slow down.

Will the 2018 NASCAR Cup Series season be the final season during which seven-time champion Jimmie Johnson, 42, drives the #48 Chevrolet for Hendrick Motorsports as a full-time driver? One former full-time Cup Series driver thinks so.

Regan Smith, 34, said on NASCAR Race Hub that he believes the 2018 season, which is set to be Johnson’s 17th season as a full-time driver in the sport dating back to 2002, will be his final season as a driver in the sport.

Here is what Smith, who last drove full-time in the Cup Series in the 2016 season and has one career win, which was at Darlington in the 2011 season, to his name in 213 races, had to say about the subject, according to Auto Zaurus.

“I think this is the last year we see Jimmie Johnson race. I think he’s going to retire after this year. I don’t have any inside information, but something tell me has to be getting to that point in his career."