All Brabham cars started with 'BT', and this is the legendary Ron Tauranac, the 'T' in that designation, alongside David Brabham and his son, Sam, a racer in his own right today.
David, a winner at Le Mans who also raced in F1 with Brabham and Simtek, posted the picture on Twitter after visiting with the 92-year-old engineer and designer this week.
The Brabham family paid tribute to Tauranac's essential contribution to its extraordinary heritage.
