Daniel Ricciardo says the first 2019 pre-season test has offered a glimmer of hope that Formula 1's new aerodynamic rules could make it easier for drivers to follow other cars.
F1 has tweaked the front and rear wing regulations for this year as part of several changes aimed at trying to boost overtaking in the coming season.
One of the key aims of the changes was to try and get cars to follow each other more closely, rather than instantly losing downforce as they approach a rival and being forced to drop back because of overheating tyres.
While a number of drivers reckoned it was too early to gauge what difference the new rules had made, Ricciardo said he had had one positive moment when he was able to shadow another car.
"It actually seemed alright," he said. "At the time I was lapping quite a bit quicker, and I don't know what car it was, so I assumed they had more fuel.
"Maybe that is why it was easier for me to follow, but if that was a like for like it felt better.
"But I don't want to get too excited. We are still going to feel it, don't get me wrong. But I would like to think that was a sign that we would feel a bit of an improvement."
While Ricciardo was staying optimistic that there was scope for things to be better, his Renault team-mate Nico Hulkenberg has no doubts that overtaking would still be hard in 2019.
"I haven't really followed any cars around, I've got a couple of tows, but my feeling is it's still going to be difficult," he said.
"The pace is just so high, especially now, and you brake so late that braking zones are so short. It's feels almost impossible to do a move on someone somewhere."