AUSTIN, Texas, Oct 25 (Reuters) - George Russell was searching for answers after finishing eighth in a US Grand Prix won by Formula One champion-in-waiting Mercedes teammateKimi Antonelli on Sunday.
The Briton started in sixth place on the grid at Austin's Circuit of the Americas, collected a five-second penalty for an incident with McLaren's OscarPiastriand said he had no explanation for his lack of pace other than "just not being quick enough."
