Lotus team principal Eric Boullier has admitted that he continues to be surprised by the progress of Romain Grosjean, after the Frenchman finished runner-up in the Canadian GP.
Despite being in only his first full season of F1, Grosjean has produced some impressive qualifying performances as well as two podiums up until now. Although the decision to sign Grosjean as Kimi Raikkonen's teammate was Boullier's, he has confessed that he never expected him to be able to deliver the kind of drives he is putting in.
"He keeps surprising me, because he has the same characteristics as we always knew he had," Boullier said. "He is a hard worker; he listens, and he works a lot with his engineers.
"But it is not only work, because he learns from the data, from advice, from everything. What is I think is very promising is that he has the pace and as he has shown in Canada he can do a full race. He did 45 laps on these tires, with being very consistent in not destroying them. He is learning and learning fast."
Grosjean is now just two points behind Raikkonen in the drivers' standings, and Boullier says that extra work needs to be done in also helping the Finn improve his qualifying performances.
"We definitely need to help Kimi, as they have different driving styles," he said. "We had this issue in Canada with the differential which doesn't help, but we need to work on helping him qualify better. For the race there is no issue."
With Lewis Hamilton becoming F1's seventh winner from seven races in Canada, Lotus now has the best chance to produce an eighth different victor in the next event in Valencia.
When asked about that possibility, Boullier said: "It's a nice pressure. If it is hot it should be OK. Then the layout of Silverstone and Germany should also help us, and Hungary maybe."