Williams had to miss the first two days of testing in Bracelona because of delays encountered with the final build of their 2019 car which was only able to make it out on track Wednesday afternoon.
Russell said (as quoted on Crash.net): "It was very important to get some mileage under our belt and just get a feel for the car.”
"Also I’ve only done about 11 proper laps in the car, but it gives us a good understanding of where we are at and the limitations and what we need to work on."
Whilst Russell and the Williams waited three days before they could start, he admitted that it wasn’t an issue seeing the other cars out on the track and remained focused.
Russel said: "It has been quite annoying watching everyone on-track, and obviously as a driver you just want to get out there.
"It has passed quite quickly because I have understood how much work has been going on for all the people building this car.
"It hasn’t made me frustrated. I understand that we haven’t got in this situation on purpose. Everybody is obsessed about it and they are working their socks off to make it right. That was refreshing for me.
"It made me quite proud of the guys and how much they are working. They have been up since yesterday at 2:30 in the morning working on the car to make it ready.
"It is a privilege to be part of this team."