Bourdais' crash was driver error
Sebastien Bourdais' crash, which wrecked the new STR3 yesterday, was caused by a driver error according to Franz Tost. Bourdais went off at turn 9 and crashed heavy in the barriers. This accident prematurely ended the first test with the STR3.
It is a possibility that the Toro Rosso team has to delay the Grand Prix debut of the STR3 in Turkey.