At Las Vegas Motor Speedway Shafer was one of two winners of the inaugural Team Green Academy Young American Driver Development Program, the other being Matt Sielsky.
Racing the experimental Nemesis 97 chassis Shafer struggled in the opening rounds.
Teammate Sielsky finished second in the championship racing the dominant Van Diemen chassis.
[7] After his active racing career Shafer was lead instructor and general manager of Derek Daly Academy.
He also was the lead engineer at Team Bucknam Racing for Brian Selby in the 2000 Star Mazda Championship.
[11] Gerhard Watzinger was the best performing One Motorsports driver in 2016 finishing eighth in the season standings.
With the Élan DP02 being phased out after the 2018 season, One Motorsports scaled back to running two part-time entries in 2017, with drivers Dave House and Paul LaHaye.
As the west-coast based dealer for the British Radical Sportscars brand, One Motorsports competed the cars at various championships.
Shafer previously competed with both Radical Ventures and Factory48 Motorsports in the 25 Hours of Thunderhill.